# Chapter 7 - Vocabulary Check: 11

cross products

#### Work Step by Step

As $\frac{a}{b}$ = $\frac{c}{d}$, they are proportional to each other, we can multiply both sides by the LCD, $bd$, resulting in $ad = bc$. $ad$ and $bc$ are known as the $\underline{cross \space products}$ of the proportion and they are equal to each other.

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