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Finding the Fourth Proportional to 372,545.71, 558,901.89 and 135,888.39

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Solution

The fourth proportional to 372,545.71, 558,901.89 and 135,888.39 is: 203,862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,545.71 : 558,901.89 = 135,888.39 : x
  2. Step 2: Convert to fraction form
    372,545.71/558,901.89 = 135,888.39/x
  3. Step 3: Cross multiply
    372,545.71x = 558,901.89 × 135,888.39
  4. Step 4: Simplify right side
    372,545.71x = 75,948,278,000.06
  5. Step 5: Solve for x
    x = 75,948,278,000.06/372,545.71
  6. Step 6: Final answer
    x = 203,862.98

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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.