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Finding the Fourth Proportional to 113,726.28, 156,891.48 and 65,951.92

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Solution

The fourth proportional to 113,726.28, 156,891.48 and 65,951.92 is: 90,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,726.28 : 156,891.48 = 65,951.92 : x
  2. Step 2: Convert to fraction form
    113,726.28/156,891.48 = 65,951.92/x
  3. Step 3: Cross multiply
    113,726.28x = 156,891.48 × 65,951.92
  4. Step 4: Simplify right side
    113,726.28x = 10,347,294,657.42
  5. Step 5: Solve for x
    x = 10,347,294,657.42/113,726.28
  6. Step 6: Final answer
    x = 90,984.20

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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.