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Finding the Fourth Proportional to 111,863.88, 167,712.01 and 67,480.29

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Solution

The fourth proportional to 111,863.88, 167,712.01 and 67,480.29 is: 101,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,863.88 : 167,712.01 = 67,480.29 : x
  2. Step 2: Convert to fraction form
    111,863.88/167,712.01 = 67,480.29/x
  3. Step 3: Cross multiply
    111,863.88x = 167,712.01 × 67,480.29
  4. Step 4: Simplify right side
    111,863.88x = 11,317,254,232.72
  5. Step 5: Solve for x
    x = 11,317,254,232.72/111,863.88
  6. Step 6: Final answer
    x = 101,169.87

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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.