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Finding the Fourth Proportional to 89,793.92, 123,912.60 and 49,507.04

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Solution

The fourth proportional to 89,793.92, 123,912.60 and 49,507.04 is: 68,318.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,793.92 : 123,912.60 = 49,507.04 : x
  2. Step 2: Convert to fraction form
    89,793.92/123,912.60 = 49,507.04/x
  3. Step 3: Cross multiply
    89,793.92x = 123,912.60 × 49,507.04
  4. Step 4: Simplify right side
    89,793.92x = 6,134,546,044.70
  5. Step 5: Solve for x
    x = 6,134,546,044.70/89,793.92
  6. Step 6: Final answer
    x = 68,318.06

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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.