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Finding the Fourth Proportional to 66,961.38, 100,348.18 and 48,152.92

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Solution

The fourth proportional to 66,961.38, 100,348.18 and 48,152.92 is: 72,161.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,961.38 : 100,348.18 = 48,152.92 : x
  2. Step 2: Convert to fraction form
    66,961.38/100,348.18 = 48,152.92/x
  3. Step 3: Cross multiply
    66,961.38x = 100,348.18 × 48,152.92
  4. Step 4: Simplify right side
    66,961.38x = 4,832,057,883.69
  5. Step 5: Solve for x
    x = 4,832,057,883.69/66,961.38
  6. Step 6: Final answer
    x = 72,161.86

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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.