Tell whether the ratios form a proportion. Explain your answer. \( \begin{array}{ll}\text { 7. } \frac{56}{20}, \frac{24}{10} & 8 . \frac{5}{8}, \frac{42.5}{68}\end{array} \)
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To check if the ratios form a proportion, we need to see if the cross-products are equal. For the first pair, calculate \(56 \times 10\) and \(20 \times 24\): - \(56 \times 10 = 560\) - \(20 \times 24 = 480\) Since \(560 \neq 480\), the first pair does not form a proportion. For the second pair, calculate \(5 \times 68\) and \(8 \times 42.5\): - \(5 \times 68 = 340\) - \(8 \times 42.5 = 340\) Since \(340 = 340\), the second pair does form a proportion. In summary, while the first sets of ratios do not form a proportion, the second does!