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Finding the Fourth Proportional to 137,691.32, 206,532.66 and 39,195.32

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Solution

The fourth proportional to 137,691.32, 206,532.66 and 39,195.32 is: 58,791.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,691.32 : 206,532.66 = 39,195.32 : x
  2. Step 2: Convert to fraction form
    137,691.32/206,532.66 = 39,195.32/x
  3. Step 3: Cross multiply
    137,691.32x = 206,532.66 × 39,195.32
  4. Step 4: Simplify right side
    137,691.32x = 8,095,113,699.15
  5. Step 5: Solve for x
    x = 8,095,113,699.15/137,691.32
  6. Step 6: Final answer
    x = 58,791.75

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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.