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Finding the Fourth Proportional to 136,691.47, 205,043.42 and 41,914.72

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Solution

The fourth proportional to 136,691.47, 205,043.42 and 41,914.72 is: 62,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,691.47 : 205,043.42 = 41,914.72 : x
  2. Step 2: Convert to fraction form
    136,691.47/205,043.42 = 41,914.72/x
  3. Step 3: Cross multiply
    136,691.47x = 205,043.42 × 41,914.72
  4. Step 4: Simplify right side
    136,691.47x = 8,594,337,537.14
  5. Step 5: Solve for x
    x = 8,594,337,537.14/136,691.47
  6. Step 6: Final answer
    x = 62,873.99

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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.