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Ratio, Rate and Proportions Practice - Manhasset Union Free School District

The equation: 3 = 21 is a proportion because its cross-products are equal. . 5 35 3 × 35 = 105 and 5 × 21 = 105 Proportions are solved by using this cross-product rule. Practice: For each word problem, write and then solve the proportion to find the answer. A. Write each ratio as a fraction in lowest terms. 1.