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Finding the Fourth Proportional to 111,268.88, 166,929.57 and 36,388.73

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Solution

The fourth proportional to 111,268.88, 166,929.57 and 36,388.73 is: 54,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,268.88 : 166,929.57 = 36,388.73 : x
  2. Step 2: Convert to fraction form
    111,268.88/166,929.57 = 36,388.73/x
  3. Step 3: Cross multiply
    111,268.88x = 166,929.57 × 36,388.73
  4. Step 4: Simplify right side
    111,268.88x = 6,074,355,469.07
  5. Step 5: Solve for x
    x = 6,074,355,469.07/111,268.88
  6. Step 6: Final answer
    x = 54,591.68

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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.