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Finding the Fourth Proportional to 150,463.52, 207,634.56 and 86,799.68

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Solution

The fourth proportional to 150,463.52, 207,634.56 and 86,799.68 is: 119,780.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,463.52 : 207,634.56 = 86,799.68 : x
  2. Step 2: Convert to fraction form
    150,463.52/207,634.56 = 86,799.68/x
  3. Step 3: Cross multiply
    150,463.52x = 207,634.56 × 86,799.68
  4. Step 4: Simplify right side
    150,463.52x = 18,022,613,364.94
  5. Step 5: Solve for x
    x = 18,022,613,364.94/150,463.52
  6. Step 6: Final answer
    x = 119,780.62

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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.