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Finding the Fourth Proportional to 73,252.80, 109,879.20 and 38,187.90

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Solution

The fourth proportional to 73,252.80, 109,879.20 and 38,187.90 is: 57,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,252.80 : 109,879.20 = 38,187.90 : x
  2. Step 2: Convert to fraction form
    73,252.80/109,879.20 = 38,187.90/x
  3. Step 3: Cross multiply
    73,252.80x = 109,879.20 × 38,187.90
  4. Step 4: Simplify right side
    73,252.80x = 4,196,055,901.68
  5. Step 5: Solve for x
    x = 4,196,055,901.68/73,252.80
  6. Step 6: Final answer
    x = 57,281.85

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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.