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Finding the Fourth Proportional to 5,697.96, 7,863.22 and 3,213.96

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Solution

The fourth proportional to 5,697.96, 7,863.22 and 3,213.96 is: 4,435.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,697.96 : 7,863.22 = 3,213.96 : x
  2. Step 2: Convert to fraction form
    5,697.96/7,863.22 = 3,213.96/x
  3. Step 3: Cross multiply
    5,697.96x = 7,863.22 × 3,213.96
  4. Step 4: Simplify right side
    5,697.96x = 25,272,074.55
  5. Step 5: Solve for x
    x = 25,272,074.55/5,697.96
  6. Step 6: Final answer
    x = 4,435.28

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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.