# Using Proportions To Solve Percent Problems In fact we always use the same label of when we set ours up.

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Example In a box of eight donuts two have pink sprinkles.

If we want to check if two ratios form a proportion we can just check their cross products.

Example Use cross product to determine if the two ratios form a proportion.

$$\frac,\: \: \frac$$ $$\frac\overset \frac$$ $$\frac\cdot 16\cdot 40\overset \frac\cdot 16\cdot 40$$ $$\frac\cdot\cdot 40\overset \frac\cdot 16\cdot$$ \$\cdot 40\overset5\cdot 16$$=80$$ Here we can see that 2/16 and 5/40 are proportions since their cross products are equal.

Percent means hundredths or per hundred and is written with the symbol, %.

## Comments Using Proportions To Solve Percent Problems

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Remember that percent originally meant "cent", or if you prefer, "parts out of 100." If we keep this in mind, it's a lot easier to set up a proportion. In fact we always.…

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Jan 30, 2015. Find the missing part of a whole when given the percentage. Also find the missing part of a given whole when given the percentage the part.…

• ###### Use Proportions to Solve Percent Problems CK-12 Foundation
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Jan 23, 2013. Learn to use proportions to solve percent problems. Using your calculation from problems #14, what percent of its own weight does it.…

• ###### Proportions and percent Pre-Algebra, Ratios and percent.
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A proportion is an equation that says that two or more ratios are equal. Try to express how many percent of the donuts in the box that have pink sprinkles using proportions. 28=x. RATIOS AND PERCENT – Solving problems with percent.…

• ###### Using the Proportion Method to Solve Percent Problems
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There are a variety of ways to solve percent problems, many of which can be VERY confusing. Fortunately, the PROPORTION METHOD will work for all three.…

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Identify the amount, the base, and the percent in a percent problem. Find the unknown in a. Using Proportions to Solve Percent Problems. Percent problems.…

• ###### PERCENTS You can use proportions to solve percent.
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You can solve any percent problem using this proportion; you can use it to find the percent, the part. EXAMPLE 1 Finding the percent 84 is what percent of 96?…

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Many percent problems can be solved by using this percent proportion. as we have numbers in three of the four positions in this proportion, we can solve to.…

• ###### Solving percent problems video Khan Academy
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We'll use algebra to solve this percent problem. do a solve a problem like this in a proportion.” more. how do a solve a problem like this in a proportion form?…