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Finding the Fourth Proportional to 72,387.53, 108,517.06 and 27,377.41

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Solution

The fourth proportional to 72,387.53, 108,517.06 and 27,377.41 is: 41,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,387.53 : 108,517.06 = 27,377.41 : x
  2. Step 2: Convert to fraction form
    72,387.53/108,517.06 = 27,377.41/x
  3. Step 3: Cross multiply
    72,387.53x = 108,517.06 × 27,377.41
  4. Step 4: Simplify right side
    72,387.53x = 2,970,915,532.96
  5. Step 5: Solve for x
    x = 2,970,915,532.96/72,387.53
  6. Step 6: Final answer
    x = 41,041.81

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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.