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Finding the Fourth Proportional to 396,408.40, 593,806.20 and 246,187.60

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Solution

The fourth proportional to 396,408.40, 593,806.20 and 246,187.60 is: 368,780.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,408.40 : 593,806.20 = 246,187.60 : x
  2. Step 2: Convert to fraction form
    396,408.40/593,806.20 = 246,187.60/x
  3. Step 3: Cross multiply
    396,408.40x = 593,806.20 × 246,187.60
  4. Step 4: Simplify right side
    396,408.40x = 146,187,723,243.12
  5. Step 5: Solve for x
    x = 146,187,723,243.12/396,408.40
  6. Step 6: Final answer
    x = 368,780.59

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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.