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Finding the Fourth Proportional to 71,615.52, 107,488.92 and 38,373.12

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Solution

The fourth proportional to 71,615.52, 107,488.92 and 38,373.12 is: 57,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,615.52 : 107,488.92 = 38,373.12 : x
  2. Step 2: Convert to fraction form
    71,615.52/107,488.92 = 38,373.12/x
  3. Step 3: Cross multiply
    71,615.52x = 107,488.92 × 38,373.12
  4. Step 4: Simplify right side
    71,615.52x = 4,124,685,225.83
  5. Step 5: Solve for x
    x = 4,124,685,225.83/71,615.52
  6. Step 6: Final answer
    x = 57,594.85

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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.