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Finding the Fourth Proportional to 101,060.80, 151,591.20 and 54,335.68

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Solution

The fourth proportional to 101,060.80, 151,591.20 and 54,335.68 is: 81,503.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,060.80 : 151,591.20 = 54,335.68 : x
  2. Step 2: Convert to fraction form
    101,060.80/151,591.20 = 54,335.68/x
  3. Step 3: Cross multiply
    101,060.80x = 151,591.20 × 54,335.68
  4. Step 4: Simplify right side
    101,060.80x = 8,236,810,934.02
  5. Step 5: Solve for x
    x = 8,236,810,934.02/101,060.80
  6. Step 6: Final answer
    x = 81,503.52

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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.