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Finding the Fourth Proportional to 118,793.18, 163,934.57 and 71,046.53

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Solution

The fourth proportional to 118,793.18, 163,934.57 and 71,046.53 is: 98,044.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,793.18 : 163,934.57 = 71,046.53 : x
  2. Step 2: Convert to fraction form
    118,793.18/163,934.57 = 71,046.53/x
  3. Step 3: Cross multiply
    118,793.18x = 163,934.57 × 71,046.53
  4. Step 4: Simplify right side
    118,793.18x = 11,646,981,170.64
  5. Step 5: Solve for x
    x = 11,646,981,170.64/118,793.18
  6. Step 6: Final answer
    x = 98,044.19

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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.