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Finding the Fourth Proportional to 168,470.61, 232,487.65 and 91,989.46

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Solution

The fourth proportional to 168,470.61, 232,487.65 and 91,989.46 is: 126,944.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,470.61 : 232,487.65 = 91,989.46 : x
  2. Step 2: Convert to fraction form
    168,470.61/232,487.65 = 91,989.46/x
  3. Step 3: Cross multiply
    168,470.61x = 232,487.65 × 91,989.46
  4. Step 4: Simplify right side
    168,470.61x = 21,386,413,380.17
  5. Step 5: Solve for x
    x = 21,386,413,380.17/168,470.61
  6. Step 6: Final answer
    x = 126,944.48

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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.