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Finding the Fourth Proportional to 396,086.28, 594,119.52 and 115,605.96

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Solution

The fourth proportional to 396,086.28, 594,119.52 and 115,605.96 is: 173,406.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,086.28 : 594,119.52 = 115,605.96 : x
  2. Step 2: Convert to fraction form
    396,086.28/594,119.52 = 115,605.96/x
  3. Step 3: Cross multiply
    396,086.28x = 594,119.52 × 115,605.96
  4. Step 4: Simplify right side
    396,086.28x = 68,683,757,464.34
  5. Step 5: Solve for x
    x = 68,683,757,464.34/396,086.28
  6. Step 6: Final answer
    x = 173,406.05

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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.