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Finding the Fourth Proportional to 110,343.12, 165,597.84 and 80,836.56

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Solution

The fourth proportional to 110,343.12, 165,597.84 and 80,836.56 is: 121,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,343.12 : 165,597.84 = 80,836.56 : x
  2. Step 2: Convert to fraction form
    110,343.12/165,597.84 = 80,836.56/x
  3. Step 3: Cross multiply
    110,343.12x = 165,597.84 × 80,836.56
  4. Step 4: Simplify right side
    110,343.12x = 13,386,359,729.03
  5. Step 5: Solve for x
    x = 13,386,359,729.03/110,343.12
  6. Step 6: Final answer
    x = 121,315.76

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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.