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Finding the Fourth Proportional to 127,719.75, 176,253.21 and 74,035.92

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Solution

The fourth proportional to 127,719.75, 176,253.21 and 74,035.92 is: 102,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,719.75 : 176,253.21 = 74,035.92 : x
  2. Step 2: Convert to fraction form
    127,719.75/176,253.21 = 74,035.92/x
  3. Step 3: Cross multiply
    127,719.75x = 176,253.21 × 74,035.92
  4. Step 4: Simplify right side
    127,719.75x = 13,049,068,555.30
  5. Step 5: Solve for x
    x = 13,049,068,555.30/127,719.75
  6. Step 6: Final answer
    x = 102,169.54

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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.