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Finding the Fourth Proportional to 125,843.96, 173,662.56 and 68,481.80

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Solution

The fourth proportional to 125,843.96, 173,662.56 and 68,481.80 is: 94,503.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,843.96 : 173,662.56 = 68,481.80 : x
  2. Step 2: Convert to fraction form
    125,843.96/173,662.56 = 68,481.80/x
  3. Step 3: Cross multiply
    125,843.96x = 173,662.56 × 68,481.80
  4. Step 4: Simplify right side
    125,843.96x = 11,892,724,553.14
  5. Step 5: Solve for x
    x = 11,892,724,553.14/125,843.96
  6. Step 6: Final answer
    x = 94,503.74

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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.