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Finding the Fourth Proportional to 98,793.60, 136,361.52 and 61,046.52

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Solution

The fourth proportional to 98,793.60, 136,361.52 and 61,046.52 is: 84,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,793.60 : 136,361.52 = 61,046.52 : x
  2. Step 2: Convert to fraction form
    98,793.60/136,361.52 = 61,046.52/x
  3. Step 3: Cross multiply
    98,793.60x = 136,361.52 × 61,046.52
  4. Step 4: Simplify right side
    98,793.60x = 8,324,396,257.91
  5. Step 5: Solve for x
    x = 8,324,396,257.91/98,793.60
  6. Step 6: Final answer
    x = 84,260.48

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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.