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Finding the Fourth Proportional to 127,708.52, 176,237.69 and 74,024.64

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Solution

The fourth proportional to 127,708.52, 176,237.69 and 74,024.64 is: 102,153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.52 : 176,237.69 = 74,024.64 : x
  2. Step 2: Convert to fraction form
    127,708.52/176,237.69 = 74,024.64/x
  3. Step 3: Cross multiply
    127,708.52x = 176,237.69 × 74,024.64
  4. Step 4: Simplify right side
    127,708.52x = 13,045,931,186.56
  5. Step 5: Solve for x
    x = 13,045,931,186.56/127,708.52
  6. Step 6: Final answer
    x = 102,153.97

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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.