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What is a Proportion? - Example
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In this video we explain how to determine if a pair of ratios forms a proportion. We use the equality test for fractions to make our decision. What is a proportion? What is the equality test for fractions? How can determine if we have a proportion? The equality test for fractions tells us that the product of the means is equal to the product of the extremes. In other words, when we form cross products, they should be equal if we have a proportion.
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