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Finding the Fourth Proportional to 72,437.28, 108,677.60 and 48,839.44

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Solution

The fourth proportional to 72,437.28, 108,677.60 and 48,839.44 is: 73,273.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,437.28 : 108,677.60 = 48,839.44 : x
  2. Step 2: Convert to fraction form
    72,437.28/108,677.60 = 48,839.44/x
  3. Step 3: Cross multiply
    72,437.28x = 108,677.60 × 48,839.44
  4. Step 4: Simplify right side
    72,437.28x = 5,307,753,124.54
  5. Step 5: Solve for x
    x = 5,307,753,124.54/72,437.28
  6. Step 6: Final answer
    x = 73,273.78

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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.