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Finding the Fourth Proportional to 57,665.70, 86,498.55 and 15,545.70

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Solution

The fourth proportional to 57,665.70, 86,498.55 and 15,545.70 is: 23,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,665.70 : 86,498.55 = 15,545.70 : x
  2. Step 2: Convert to fraction form
    57,665.70/86,498.55 = 15,545.70/x
  3. Step 3: Cross multiply
    57,665.70x = 86,498.55 × 15,545.70
  4. Step 4: Simplify right side
    57,665.70x = 1,344,680,508.74
  5. Step 5: Solve for x
    x = 1,344,680,508.74/57,665.70
  6. Step 6: Final answer
    x = 23,318.55

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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.