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Finding the Fourth Proportional to 111,137.49, 166,713.41 and 39,081.56

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Solution

The fourth proportional to 111,137.49, 166,713.41 and 39,081.56 is: 58,624.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,137.49 : 166,713.41 = 39,081.56 : x
  2. Step 2: Convert to fraction form
    111,137.49/166,713.41 = 39,081.56/x
  3. Step 3: Cross multiply
    111,137.49x = 166,713.41 × 39,081.56
  4. Step 4: Simplify right side
    111,137.49x = 6,515,419,940.31
  5. Step 5: Solve for x
    x = 6,515,419,940.31/111,137.49
  6. Step 6: Final answer
    x = 58,624.86

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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.