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Finding the Fourth Proportional to 134,129.71, 185,078.89 and 73,702.90

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Solution

The fourth proportional to 134,129.71, 185,078.89 and 73,702.90 is: 101,698.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,129.71 : 185,078.89 = 73,702.90 : x
  2. Step 2: Convert to fraction form
    134,129.71/185,078.89 = 73,702.90/x
  3. Step 3: Cross multiply
    134,129.71x = 185,078.89 × 73,702.90
  4. Step 4: Simplify right side
    134,129.71x = 13,640,850,921.78
  5. Step 5: Solve for x
    x = 13,640,850,921.78/134,129.71
  6. Step 6: Final answer
    x = 101,698.95

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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.