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Finding the Fourth Proportional to 396,700.20, 547,309.20 and 253,544.04

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Solution

The fourth proportional to 396,700.20, 547,309.20 and 253,544.04 is: 349,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,700.20 : 547,309.20 = 253,544.04 : x
  2. Step 2: Convert to fraction form
    396,700.20/547,309.20 = 253,544.04/x
  3. Step 3: Cross multiply
    396,700.20x = 547,309.20 × 253,544.04
  4. Step 4: Simplify right side
    396,700.20x = 138,766,985,697.17
  5. Step 5: Solve for x
    x = 138,766,985,697.17/396,700.20
  6. Step 6: Final answer
    x = 349,803.17

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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.