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Finding the Fourth Proportional to 118,781.73, 163,921.43 and 67,793.43

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Solution

The fourth proportional to 118,781.73, 163,921.43 and 67,793.43 is: 93,556.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,781.73 : 163,921.43 = 67,793.43 : x
  2. Step 2: Convert to fraction form
    118,781.73/163,921.43 = 67,793.43/x
  3. Step 3: Cross multiply
    118,781.73x = 163,921.43 × 67,793.43
  4. Step 4: Simplify right side
    118,781.73x = 11,112,795,990.20
  5. Step 5: Solve for x
    x = 11,112,795,990.20/118,781.73
  6. Step 6: Final answer
    x = 93,556.44

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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.