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Finding the Fourth Proportional to 110,866.20, 166,340.62 and 66,524.78

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Solution

The fourth proportional to 110,866.20, 166,340.62 and 66,524.78 is: 99,811.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,866.20 : 166,340.62 = 66,524.78 : x
  2. Step 2: Convert to fraction form
    110,866.20/166,340.62 = 66,524.78/x
  3. Step 3: Cross multiply
    110,866.20x = 166,340.62 × 66,524.78
  4. Step 4: Simplify right side
    110,866.20x = 11,065,773,150.56
  5. Step 5: Solve for x
    x = 11,065,773,150.56/110,866.20
  6. Step 6: Final answer
    x = 99,811.96

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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.