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Finding the Fourth Proportional to 71,695.20, 107,427.60 and 59,944.80

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Solution

The fourth proportional to 71,695.20, 107,427.60 and 59,944.80 is: 89,820.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,695.20 : 107,427.60 = 59,944.80 : x
  2. Step 2: Convert to fraction form
    71,695.20/107,427.60 = 59,944.80/x
  3. Step 3: Cross multiply
    71,695.20x = 107,427.60 × 59,944.80
  4. Step 4: Simplify right side
    71,695.20x = 6,439,725,996.48
  5. Step 5: Solve for x
    x = 6,439,725,996.48/71,695.20
  6. Step 6: Final answer
    x = 89,820.88

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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.