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Finding the Fourth Proportional to 71,905.28, 107,906.54 and 25,158.56

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Solution

The fourth proportional to 71,905.28, 107,906.54 and 25,158.56 is: 37,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,905.28 : 107,906.54 = 25,158.56 : x
  2. Step 2: Convert to fraction form
    71,905.28/107,906.54 = 25,158.56/x
  3. Step 3: Cross multiply
    71,905.28x = 107,906.54 × 25,158.56
  4. Step 4: Simplify right side
    71,905.28x = 2,714,773,160.98
  5. Step 5: Solve for x
    x = 2,714,773,160.98/71,905.28
  6. Step 6: Final answer
    x = 37,754.85

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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.