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Finding the Fourth Proportional to 168,042.78, 231,888.15 and 92,591.28

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Solution

The fourth proportional to 168,042.78, 231,888.15 and 92,591.28 is: 127,769.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,042.78 : 231,888.15 = 92,591.28 : x
  2. Step 2: Convert to fraction form
    168,042.78/231,888.15 = 92,591.28/x
  3. Step 3: Cross multiply
    168,042.78x = 231,888.15 × 92,591.28
  4. Step 4: Simplify right side
    168,042.78x = 21,470,820,625.33
  5. Step 5: Solve for x
    x = 21,470,820,625.33/168,042.78
  6. Step 6: Final answer
    x = 127,769.97

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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.