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Finding the Fourth Proportional to 104,438.57, 144,125.39 and 56,691.97

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Solution

The fourth proportional to 104,438.57, 144,125.39 and 56,691.97 is: 78,235.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,438.57 : 144,125.39 = 56,691.97 : x
  2. Step 2: Convert to fraction form
    104,438.57/144,125.39 = 56,691.97/x
  3. Step 3: Cross multiply
    104,438.57x = 144,125.39 × 56,691.97
  4. Step 4: Simplify right side
    104,438.57x = 8,170,752,067.53
  5. Step 5: Solve for x
    x = 8,170,752,067.53/104,438.57
  6. Step 6: Final answer
    x = 78,235.01

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1.5x scale

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.