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Finding the Fourth Proportional to 396,591.15, 547,092.99 and 253,200.45

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Solution

The fourth proportional to 396,591.15, 547,092.99 and 253,200.45 is: 349,287.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,591.15 : 547,092.99 = 253,200.45 : x
  2. Step 2: Convert to fraction form
    396,591.15/547,092.99 = 253,200.45/x
  3. Step 3: Cross multiply
    396,591.15x = 547,092.99 × 253,200.45
  4. Step 4: Simplify right side
    396,591.15x = 138,524,191,259.85
  5. Step 5: Solve for x
    x = 138,524,191,259.85/396,591.15
  6. Step 6: Final answer
    x = 349,287.15

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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.