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Finding the Fourth Proportional to 115,702.98, 159,671.28 and 67,957.12

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Solution

The fourth proportional to 115,702.98, 159,671.28 and 67,957.12 is: 93,781.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,702.98 : 159,671.28 = 67,957.12 : x
  2. Step 2: Convert to fraction form
    115,702.98/159,671.28 = 67,957.12/x
  3. Step 3: Cross multiply
    115,702.98x = 159,671.28 × 67,957.12
  4. Step 4: Simplify right side
    115,702.98x = 10,850,800,335.51
  5. Step 5: Solve for x
    x = 10,850,800,335.51/115,702.98
  6. Step 6: Final answer
    x = 93,781.51

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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.