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Finding the Fourth Proportional to 111,781.62, 167,687.42 and 40,695.01

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Solution

The fourth proportional to 111,781.62, 167,687.42 and 40,695.01 is: 61,047.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,781.62 : 167,687.42 = 40,695.01 : x
  2. Step 2: Convert to fraction form
    111,781.62/167,687.42 = 40,695.01/x
  3. Step 3: Cross multiply
    111,781.62x = 167,687.42 × 40,695.01
  4. Step 4: Simplify right side
    111,781.62x = 6,824,040,611.08
  5. Step 5: Solve for x
    x = 6,824,040,611.08/111,781.62
  6. Step 6: Final answer
    x = 61,047.97

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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.