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Finding the Fourth Proportional to 396,545.78, 547,242.42 and 235,401.44

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Solution

The fourth proportional to 396,545.78, 547,242.42 and 235,401.44 is: 324,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,545.78 : 547,242.42 = 235,401.44 : x
  2. Step 2: Convert to fraction form
    396,545.78/547,242.42 = 235,401.44/x
  3. Step 3: Cross multiply
    396,545.78x = 547,242.42 × 235,401.44
  4. Step 4: Simplify right side
    396,545.78x = 128,821,650,960.87
  5. Step 5: Solve for x
    x = 128,821,650,960.87/396,545.78
  6. Step 6: Final answer
    x = 324,859.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.