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Finding the Fourth Proportional to 108,960.71, 150,377.96 and 65,963.90

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Solution

The fourth proportional to 108,960.71, 150,377.96 and 65,963.90 is: 91,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,960.71 : 150,377.96 = 65,963.90 : x
  2. Step 2: Convert to fraction form
    108,960.71/150,377.96 = 65,963.90/x
  3. Step 3: Cross multiply
    108,960.71x = 150,377.96 × 65,963.90
  4. Step 4: Simplify right side
    108,960.71x = 9,919,515,633.93
  5. Step 5: Solve for x
    x = 9,919,515,633.93/108,960.71
  6. Step 6: Final answer
    x = 91,037.55

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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.