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Finding the Fourth Proportional to 111,121.86, 166,665.87 and 36,241.89

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Solution

The fourth proportional to 111,121.86, 166,665.87 and 36,241.89 is: 54,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,121.86 : 166,665.87 = 36,241.89 : x
  2. Step 2: Convert to fraction form
    111,121.86/166,665.87 = 36,241.89/x
  3. Step 3: Cross multiply
    111,121.86x = 166,665.87 × 36,241.89
  4. Step 4: Simplify right side
    111,121.86x = 6,040,286,521.27
  5. Step 5: Solve for x
    x = 6,040,286,521.27/111,121.86
  6. Step 6: Final answer
    x = 54,357.32

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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.