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Finding the Fourth Proportional to 110,820.80, 166,123.20 and 63,387.20

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Solution

The fourth proportional to 110,820.80, 166,123.20 and 63,387.20 is: 95,019.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,820.80 : 166,123.20 = 63,387.20 : x
  2. Step 2: Convert to fraction form
    110,820.80/166,123.20 = 63,387.20/x
  3. Step 3: Cross multiply
    110,820.80x = 166,123.20 × 63,387.20
  4. Step 4: Simplify right side
    110,820.80x = 10,530,084,503.04
  5. Step 5: Solve for x
    x = 10,530,084,503.04/110,820.80
  6. Step 6: Final answer
    x = 95,019.03

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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.