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Finding the Fourth Proportional to 300,691.28, 451,002.36 and 79,092.56

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Solution

The fourth proportional to 300,691.28, 451,002.36 and 79,092.56 is: 118,629.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,691.28 : 451,002.36 = 79,092.56 : x
  2. Step 2: Convert to fraction form
    300,691.28/451,002.36 = 79,092.56/x
  3. Step 3: Cross multiply
    300,691.28x = 451,002.36 × 79,092.56
  4. Step 4: Simplify right side
    300,691.28x = 35,670,931,218.44
  5. Step 5: Solve for x
    x = 35,670,931,218.44/300,691.28
  6. Step 6: Final answer
    x = 118,629.75

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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.