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Finding the Fourth Proportional to 143,901.68, 215,835.92 and 38,712.38

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Solution

The fourth proportional to 143,901.68, 215,835.92 and 38,712.38 is: 58,064.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,901.68 : 215,835.92 = 38,712.38 : x
  2. Step 2: Convert to fraction form
    143,901.68/215,835.92 = 38,712.38/x
  3. Step 3: Cross multiply
    143,901.68x = 215,835.92 × 38,712.38
  4. Step 4: Simplify right side
    143,901.68x = 8,355,521,959.13
  5. Step 5: Solve for x
    x = 8,355,521,959.13/143,901.68
  6. Step 6: Final answer
    x = 58,064.10

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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.