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Finding the Fourth Proportional to 125,393.60, 173,043.14 and 71,679.77

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Solution

The fourth proportional to 125,393.60, 173,043.14 and 71,679.77 is: 98,918.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,393.60 : 173,043.14 = 71,679.77 : x
  2. Step 2: Convert to fraction form
    125,393.60/173,043.14 = 71,679.77/x
  3. Step 3: Cross multiply
    125,393.60x = 173,043.14 × 71,679.77
  4. Step 4: Simplify right side
    125,393.60x = 12,403,691,251.66
  5. Step 5: Solve for x
    x = 12,403,691,251.66/125,393.60
  6. Step 6: Final answer
    x = 98,918.06

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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.