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Finding the Fourth Proportional to 88,222.92, 121,753.80 and 49,982.16

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Solution

The fourth proportional to 88,222.92, 121,753.80 and 49,982.16 is: 68,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,222.92 : 121,753.80 = 49,982.16 : x
  2. Step 2: Convert to fraction form
    88,222.92/121,753.80 = 49,982.16/x
  3. Step 3: Cross multiply
    88,222.92x = 121,753.80 × 49,982.16
  4. Step 4: Simplify right side
    88,222.92x = 6,085,517,912.21
  5. Step 5: Solve for x
    x = 6,085,517,912.21/88,222.92
  6. Step 6: Final answer
    x = 68,978.88

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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.