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Finding the Fourth Proportional to 17,691.92, 24,402.09 and 10,135.50

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Solution

The fourth proportional to 17,691.92, 24,402.09 and 10,135.50 is: 13,979.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,691.92 : 24,402.09 = 10,135.50 : x
  2. Step 2: Convert to fraction form
    17,691.92/24,402.09 = 10,135.50/x
  3. Step 3: Cross multiply
    17,691.92x = 24,402.09 × 10,135.50
  4. Step 4: Simplify right side
    17,691.92x = 247,327,329.70
  5. Step 5: Solve for x
    x = 247,327,329.70/17,691.92
  6. Step 6: Final answer
    x = 13,979.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.