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Finding the Fourth Proportional to 247,489.62, 341,540.78 and 140,059.62

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Solution

The fourth proportional to 247,489.62, 341,540.78 and 140,059.62 is: 193,285.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,489.62 : 341,540.78 = 140,059.62 : x
  2. Step 2: Convert to fraction form
    247,489.62/341,540.78 = 140,059.62/x
  3. Step 3: Cross multiply
    247,489.62x = 341,540.78 × 140,059.62
  4. Step 4: Simplify right side
    247,489.62x = 47,836,071,861.30
  5. Step 5: Solve for x
    x = 47,836,071,861.30/247,489.62
  6. Step 6: Final answer
    x = 193,285.16

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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.