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Finding the Fourth Proportional to 116,489.78, 174,623.94 and 74,251.29

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Solution

The fourth proportional to 116,489.78, 174,623.94 and 74,251.29 is: 111,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,489.78 : 174,623.94 = 74,251.29 : x
  2. Step 2: Convert to fraction form
    116,489.78/174,623.94 = 74,251.29/x
  3. Step 3: Cross multiply
    116,489.78x = 174,623.94 × 74,251.29
  4. Step 4: Simplify right side
    116,489.78x = 12,966,053,464.72
  5. Step 5: Solve for x
    x = 12,966,053,464.72/116,489.78
  6. Step 6: Final answer
    x = 111,306.36

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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.