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6-6 Solving Proportions

6-6 Solving Proportions. What does it mean to be proportional?. Your rates/ratios are equivalent!. What is a proportion?. An equation stating two ratios/rates are proportional Ex:. Checking proportionality:. Method #1: The cross products of any proportion are equal.

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6-6 Solving Proportions

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  1. 6-6 Solving Proportions

  2. What does it mean to be proportional? Your rates/ratios are equivalent! What is a proportion? • An equation stating two ratios/rates are proportional • Ex:

  3. Checking proportionality: Method #1: The cross products of any proportion are equal. Method#2: The “fractions” are equivalent. You can check simplest form, common denominators, unit rates, etc.

  4. Proportional? Is 4 turns in 64 seconds proportional to 5 turns in 76 seconds? Method #1 Method #2

  5. Solving Proportions Use cross products! • Is there another way we could have solved this one?

  6. Solving Proportions

  7. Word Problems For every 18 people with a sore throat, there are 2 people who actually have strep. If 72 patients have a sore throat, how many probably have strep?

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