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Finding the Fourth Proportional to 3,965.43, 5,472.14 and 2,197.07

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Solution

The fourth proportional to 3,965.43, 5,472.14 and 2,197.07 is: 3,031.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.43 : 5,472.14 = 2,197.07 : x
  2. Step 2: Convert to fraction form
    3,965.43/5,472.14 = 2,197.07/x
  3. Step 3: Cross multiply
    3,965.43x = 5,472.14 × 2,197.07
  4. Step 4: Simplify right side
    3,965.43x = 12,022,652.76
  5. Step 5: Solve for x
    x = 12,022,652.76/3,965.43
  6. Step 6: Final answer
    x = 3,031.87

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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.