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Finding the Fourth Proportional to 178,616.07, 267,856.61 and 71,963.87

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Solution

The fourth proportional to 178,616.07, 267,856.61 and 71,963.87 is: 107,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,616.07 : 267,856.61 = 71,963.87 : x
  2. Step 2: Convert to fraction form
    178,616.07/267,856.61 = 71,963.87/x
  3. Step 3: Cross multiply
    178,616.07x = 267,856.61 × 71,963.87
  4. Step 4: Simplify right side
    178,616.07x = 19,275,996,561.58
  5. Step 5: Solve for x
    x = 19,275,996,561.58/178,616.07
  6. Step 6: Final answer
    x = 107,918.60

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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.