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Finding the Fourth Proportional to 121,915.44, 182,951.10 and 51,794.73

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Solution

The fourth proportional to 121,915.44, 182,951.10 and 51,794.73 is: 77,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,915.44 : 182,951.10 = 51,794.73 : x
  2. Step 2: Convert to fraction form
    121,915.44/182,951.10 = 51,794.73/x
  3. Step 3: Cross multiply
    121,915.44x = 182,951.10 × 51,794.73
  4. Step 4: Simplify right side
    121,915.44x = 9,475,902,827.70
  5. Step 5: Solve for x
    x = 9,475,902,827.70/121,915.44
  6. Step 6: Final answer
    x = 77,725.21

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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.