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Finding the Fourth Proportional to 179,651.20, 269,455.20 and 74,459.20

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Solution

The fourth proportional to 179,651.20, 269,455.20 and 74,459.20 is: 111,679.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,651.20 : 269,455.20 = 74,459.20 : x
  2. Step 2: Convert to fraction form
    179,651.20/269,455.20 = 74,459.20/x
  3. Step 3: Cross multiply
    179,651.20x = 269,455.20 × 74,459.20
  4. Step 4: Simplify right side
    179,651.20x = 20,063,418,627.84
  5. Step 5: Solve for x
    x = 20,063,418,627.84/179,651.20
  6. Step 6: Final answer
    x = 111,679.85

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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.