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Finding the Fourth Proportional to 129,060.80, 193,591.20 and 101,067.20

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Solution

The fourth proportional to 129,060.80, 193,591.20 and 101,067.20 is: 151,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,060.80 : 193,591.20 = 101,067.20 : x
  2. Step 2: Convert to fraction form
    129,060.80/193,591.20 = 101,067.20/x
  3. Step 3: Cross multiply
    129,060.80x = 193,591.20 × 101,067.20
  4. Step 4: Simplify right side
    129,060.80x = 19,565,720,528.64
  5. Step 5: Solve for x
    x = 19,565,720,528.64/129,060.80
  6. Step 6: Final answer
    x = 151,600.80

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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.