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Finding the Third Proportional to 5,590.13 and 8,715.38

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Solution

The third proportional to 5,590.13 and 8,715.38 is: 13,587.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.13 : 8,715.38 = 8,715.38 : x
  2. Step 2: Convert to fraction form
    5,590.13/8,715.38 = 8,715.38/x
  3. Step 3: Cross multiply
    5,590.13x = 8,715.38 × 8,715.38
  4. Step 4: Simplify right side
    5,590.13x = 75,957,761.39
  5. Step 5: Solve for x
    x = 75,957,761.39/5,590.13
  6. Step 6: Final answer
    x = 13,587.85

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.