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Finding the Fourth Proportional to 110,965.20, 166,246.20 and 64,078.80

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Solution

The fourth proportional to 110,965.20, 166,246.20 and 64,078.80 is: 96,001.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,965.20 : 166,246.20 = 64,078.80 : x
  2. Step 2: Convert to fraction form
    110,965.20/166,246.20 = 64,078.80/x
  3. Step 3: Cross multiply
    110,965.20x = 166,246.20 × 64,078.80
  4. Step 4: Simplify right side
    110,965.20x = 10,652,857,000.56
  5. Step 5: Solve for x
    x = 10,652,857,000.56/110,965.20
  6. Step 6: Final answer
    x = 96,001.78

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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.