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Finding the Fourth Proportional to 396,633.11, 595,186.05 and 143,933.32

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Solution

The fourth proportional to 396,633.11, 595,186.05 and 143,933.32 is: 215,985.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,633.11 : 595,186.05 = 143,933.32 : x
  2. Step 2: Convert to fraction form
    396,633.11/595,186.05 = 143,933.32/x
  3. Step 3: Cross multiply
    396,633.11x = 595,186.05 × 143,933.32
  4. Step 4: Simplify right side
    396,633.11x = 85,667,101,218.26
  5. Step 5: Solve for x
    x = 85,667,101,218.26/396,633.11
  6. Step 6: Final answer
    x = 215,985.75

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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.