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Finding the Fourth Proportional to 111,108, 166,679.39 and 36,210.75

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Solution

The fourth proportional to 111,108, 166,679.39 and 36,210.75 is: 54,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,108 : 166,679.39 = 36,210.75 : x
  2. Step 2: Convert to fraction form
    111,108/166,679.39 = 36,210.75/x
  3. Step 3: Cross multiply
    111,108x = 166,679.39 × 36,210.75
  4. Step 4: Simplify right side
    111,108x = 6,035,585,721.44
  5. Step 5: Solve for x
    x = 6,035,585,721.44/111,108
  6. Step 6: Final answer
    x = 54,321.79

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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.