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Finding the Fourth Proportional to 57,665.90, 86,498.85 and 15,545.90

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Solution

The fourth proportional to 57,665.90, 86,498.85 and 15,545.90 is: 23,318.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.90 : 86,498.85 = 15,545.90 : x
  2. Step 2: Convert to fraction form
    57,665.90/86,498.85 = 15,545.90/x
  3. Step 3: Cross multiply
    57,665.90x = 86,498.85 × 15,545.90
  4. Step 4: Simplify right side
    57,665.90x = 1,344,702,472.22
  5. Step 5: Solve for x
    x = 1,344,702,472.22/57,665.90
  6. Step 6: Final answer
    x = 23,318.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.