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Finding the Fourth Proportional to 101,915.56, 140,640.76 and 56,592.36

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Solution

The fourth proportional to 101,915.56, 140,640.76 and 56,592.36 is: 78,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,915.56 : 140,640.76 = 56,592.36 : x
  2. Step 2: Convert to fraction form
    101,915.56/140,640.76 = 56,592.36/x
  3. Step 3: Cross multiply
    101,915.56x = 140,640.76 × 56,592.36
  4. Step 4: Simplify right side
    101,915.56x = 7,959,192,520.59
  5. Step 5: Solve for x
    x = 7,959,192,520.59/101,915.56
  6. Step 6: Final answer
    x = 78,095.95

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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.