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| Questão | Responda |
| Proportion | Made up of two equal ratios. |
| What must be equal in a ration? | The two ratios that form. The two ratios must be equivalent fractions. Their cross-products must be equal. |
| Cross-Products | The top of the first ratio times the bottom of the other ratio is the same as the bottom of the ratio times the top of the other |
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