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Finding the Fourth Proportional to 396,573.86, 547,069.19 and 253,183.20

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Solution

The fourth proportional to 396,573.86, 547,069.19 and 253,183.20 is: 349,263.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,573.86 : 547,069.19 = 253,183.20 : x
  2. Step 2: Convert to fraction form
    396,573.86/547,069.19 = 253,183.20/x
  3. Step 3: Cross multiply
    396,573.86x = 547,069.19 × 253,183.20
  4. Step 4: Simplify right side
    396,573.86x = 138,508,726,879.69
  5. Step 5: Solve for x
    x = 138,508,726,879.69/396,573.86
  6. Step 6: Final answer
    x = 349,263.38

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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.