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Finding the Fourth Proportional to 67,096.80, 100,645.20 and 27,640.80

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Solution

The fourth proportional to 67,096.80, 100,645.20 and 27,640.80 is: 41,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,096.80 : 100,645.20 = 27,640.80 : x
  2. Step 2: Convert to fraction form
    67,096.80/100,645.20 = 27,640.80/x
  3. Step 3: Cross multiply
    67,096.80x = 100,645.20 × 27,640.80
  4. Step 4: Simplify right side
    67,096.80x = 2,781,913,844.16
  5. Step 5: Solve for x
    x = 2,781,913,844.16/67,096.80
  6. Step 6: Final answer
    x = 41,461.20

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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.