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Finding the Fourth Proportional to 111,640.70, 167,412.45 and 36,731.90

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Solution

The fourth proportional to 111,640.70, 167,412.45 and 36,731.90 is: 55,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,640.70 : 167,412.45 = 36,731.90 : x
  2. Step 2: Convert to fraction form
    111,640.70/167,412.45 = 36,731.90/x
  3. Step 3: Cross multiply
    111,640.70x = 167,412.45 × 36,731.90
  4. Step 4: Simplify right side
    111,640.70x = 6,149,377,372.16
  5. Step 5: Solve for x
    x = 6,149,377,372.16/111,640.70
  6. Step 6: Final answer
    x = 55,081.86

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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.