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Finding the Fourth Proportional to 111,712.36, 167,687.90 and 45,195.96

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Solution

The fourth proportional to 111,712.36, 167,687.90 and 45,195.96 is: 67,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,712.36 : 167,687.90 = 45,195.96 : x
  2. Step 2: Convert to fraction form
    111,712.36/167,687.90 = 45,195.96/x
  3. Step 3: Cross multiply
    111,712.36x = 167,687.90 × 45,195.96
  4. Step 4: Simplify right side
    111,712.36x = 7,578,815,620.88
  5. Step 5: Solve for x
    x = 7,578,815,620.88/111,712.36
  6. Step 6: Final answer
    x = 67,842.23

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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.