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Finding the Fourth Proportional to 111,472.83, 167,110.80 and 85,294.44

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Solution

The fourth proportional to 111,472.83, 167,110.80 and 85,294.44 is: 127,866.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,472.83 : 167,110.80 = 85,294.44 : x
  2. Step 2: Convert to fraction form
    111,472.83/167,110.80 = 85,294.44/x
  3. Step 3: Cross multiply
    111,472.83x = 167,110.80 × 85,294.44
  4. Step 4: Simplify right side
    111,472.83x = 14,253,622,103.95
  5. Step 5: Solve for x
    x = 14,253,622,103.95/111,472.83
  6. Step 6: Final answer
    x = 127,866.33

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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.