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Finding the Fourth Proportional to 396,339.46, 594,571.18 and 130,039.42

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Solution

The fourth proportional to 396,339.46, 594,571.18 and 130,039.42 is: 195,079.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,339.46 : 594,571.18 = 130,039.42 : x
  2. Step 2: Convert to fraction form
    396,339.46/594,571.18 = 130,039.42/x
  3. Step 3: Cross multiply
    396,339.46x = 594,571.18 × 130,039.42
  4. Step 4: Simplify right side
    396,339.46x = 77,317,691,395.92
  5. Step 5: Solve for x
    x = 77,317,691,395.92/396,339.46
  6. Step 6: Final answer
    x = 195,079.47

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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.