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Finding the Fourth Proportional to 127,718.74, 176,251.82 and 74,034.92

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Solution

The fourth proportional to 127,718.74, 176,251.82 and 74,034.92 is: 102,168.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,718.74 : 176,251.82 = 74,034.92 : x
  2. Step 2: Convert to fraction form
    127,718.74/176,251.82 = 74,034.92/x
  3. Step 3: Cross multiply
    127,718.74x = 176,251.82 × 74,034.92
  4. Step 4: Simplify right side
    127,718.74x = 13,048,789,393.55
  5. Step 5: Solve for x
    x = 13,048,789,393.55/127,718.74
  6. Step 6: Final answer
    x = 102,168.17

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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.