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Finding the Fourth Proportional to 89,787.92, 123,901.62 and 49,499.48

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Solution

The fourth proportional to 89,787.92, 123,901.62 and 49,499.48 is: 68,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,787.92 : 123,901.62 = 49,499.48 : x
  2. Step 2: Convert to fraction form
    89,787.92/123,901.62 = 49,499.48/x
  3. Step 3: Cross multiply
    89,787.92x = 123,901.62 × 49,499.48
  4. Step 4: Simplify right side
    89,787.92x = 6,133,065,761.16
  5. Step 5: Solve for x
    x = 6,133,065,761.16/89,787.92
  6. Step 6: Final answer
    x = 68,306.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.