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Finding the Fourth Proportional to 121,915.27, 182,902.11 and 61,793.83

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Solution

The fourth proportional to 121,915.27, 182,902.11 and 61,793.83 is: 92,705.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,915.27 : 182,902.11 = 61,793.83 : x
  2. Step 2: Convert to fraction form
    121,915.27/182,902.11 = 61,793.83/x
  3. Step 3: Cross multiply
    121,915.27x = 182,902.11 × 61,793.83
  4. Step 4: Simplify right side
    121,915.27x = 11,302,221,891.98
  5. Step 5: Solve for x
    x = 11,302,221,891.98/121,915.27
  6. Step 6: Final answer
    x = 92,705.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.