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Finding the Fourth Proportional to 3,486.33, 5,229.46 and 889.24

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Solution

The fourth proportional to 3,486.33, 5,229.46 and 889.24 is: 1,333.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.33 : 5,229.46 = 889.24 : x
  2. Step 2: Convert to fraction form
    3,486.33/5,229.46 = 889.24/x
  3. Step 3: Cross multiply
    3,486.33x = 5,229.46 × 889.24
  4. Step 4: Simplify right side
    3,486.33x = 4,650,245.01
  5. Step 5: Solve for x
    x = 4,650,245.01/3,486.33
  6. Step 6: Final answer
    x = 1,333.85

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Similar ratio
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1.5x scale

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.