Question

find the number that makes the ratio equivalent to 10:8.
90:
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Explanation:

Step1: Set up proportion

Let the unknown number be \( x \). We have the proportion \( \frac{10}{8}=\frac{90}{x} \).

Step2: Cross - multiply

Cross - multiplying gives \( 10x = 8\times90 \).

Step3: Solve for \( x \)

First, calculate \( 8\times90 = 720 \). Then, divide both sides of the equation \( 10x = 720 \) by 10. So, \( x=\frac{720}{10}=72 \).

Answer:

72