The Nature of Mathematics, 12th Edition
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Chapter 2
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Chapter 4
Chapter 5
Chapter 6
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Chapter 12
Chapter 13
Chapter 14
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Section 6.7: Ratios, Proportions, and Problem Solving

6.7 Outline

A. Ratios
      1. definition
      2. reduce a ratio
B. Proportions
      1. definition
      2. property of proportions
      3. solving proportions
          a. cross-product divided by the number opposite the unknown
          b. procedure

6.7 Essential Ideas