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Finding the Fourth Proportional to 91,472.80, 137,209.20 and 32,375.20

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Solution

The fourth proportional to 91,472.80, 137,209.20 and 32,375.20 is: 48,562.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,472.80 : 137,209.20 = 32,375.20 : x
  2. Step 2: Convert to fraction form
    91,472.80/137,209.20 = 32,375.20/x
  3. Step 3: Cross multiply
    91,472.80x = 137,209.20 × 32,375.20
  4. Step 4: Simplify right side
    91,472.80x = 4,442,175,291.84
  5. Step 5: Solve for x
    x = 4,442,175,291.84/91,472.80
  6. Step 6: Final answer
    x = 48,562.80

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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.