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Finding the Fourth Proportional to 73,168.52, 100,972.56 and 39,634.52

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Solution

The fourth proportional to 73,168.52, 100,972.56 and 39,634.52 is: 54,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,168.52 : 100,972.56 = 39,634.52 : x
  2. Step 2: Convert to fraction form
    73,168.52/100,972.56 = 39,634.52/x
  3. Step 3: Cross multiply
    73,168.52x = 100,972.56 × 39,634.52
  4. Step 4: Simplify right side
    73,168.52x = 4,001,998,948.77
  5. Step 5: Solve for x
    x = 4,001,998,948.77/73,168.52
  6. Step 6: Final answer
    x = 54,695.64

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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.