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Finding the Fourth Proportional to 111,321.72, 166,964.49 and 36,440.73

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Solution

The fourth proportional to 111,321.72, 166,964.49 and 36,440.73 is: 54,655.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,321.72 : 166,964.49 = 36,440.73 : x
  2. Step 2: Convert to fraction form
    111,321.72/166,964.49 = 36,440.73/x
  3. Step 3: Cross multiply
    111,321.72x = 166,964.49 × 36,440.73
  4. Step 4: Simplify right side
    111,321.72x = 6,084,307,899.68
  5. Step 5: Solve for x
    x = 6,084,307,899.68/111,321.72
  6. Step 6: Final answer
    x = 54,655.17

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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.