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Finding the Fourth Proportional to 111,094.97, 166,531.68 and 71,679.77

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Solution

The fourth proportional to 111,094.97, 166,531.68 and 71,679.77 is: 107,448.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,094.97 : 166,531.68 = 71,679.77 : x
  2. Step 2: Convert to fraction form
    111,094.97/166,531.68 = 71,679.77/x
  3. Step 3: Cross multiply
    111,094.97x = 166,531.68 × 71,679.77
  4. Step 4: Simplify right side
    111,094.97x = 11,936,951,687.46
  5. Step 5: Solve for x
    x = 11,936,951,687.46/111,094.97
  6. Step 6: Final answer
    x = 107,448.18

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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.