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Finding the Fourth Proportional to 2,593.52, 3,890.20 and 862.16

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Solution

The fourth proportional to 2,593.52, 3,890.20 and 862.16 is: 1,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,593.52 : 3,890.20 = 862.16 : x
  2. Step 2: Convert to fraction form
    2,593.52/3,890.20 = 862.16/x
  3. Step 3: Cross multiply
    2,593.52x = 3,890.20 × 862.16
  4. Step 4: Simplify right side
    2,593.52x = 3,353,974.83
  5. Step 5: Solve for x
    x = 3,353,974.83/2,593.52
  6. Step 6: Final answer
    x = 1,293.21

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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.