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Finding the Fourth Proportional to 396,617.67, 594,421.07 and 185,790.87

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Solution

The fourth proportional to 396,617.67, 594,421.07 and 185,790.87 is: 278,449.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,617.67 : 594,421.07 = 185,790.87 : x
  2. Step 2: Convert to fraction form
    396,617.67/594,421.07 = 185,790.87/x
  3. Step 3: Cross multiply
    396,617.67x = 594,421.07 × 185,790.87
  4. Step 4: Simplify right side
    396,617.67x = 110,438,006,812.68
  5. Step 5: Solve for x
    x = 110,438,006,812.68/396,617.67
  6. Step 6: Final answer
    x = 278,449.54

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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.