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Finding the Third Proportional to 5,432 and 8,200

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Solution

The third proportional to 5,432 and 8,200 is: 12,378.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432 : 8,200 = 8,200 : x
  2. Step 2: Convert to fraction form
    5,432/8,200 = 8,200/x
  3. Step 3: Cross multiply
    5,432x = 8,200 × 8,200
  4. Step 4: Simplify right side
    5,432x = 67,240,000
  5. Step 5: Solve for x
    x = 67,240,000/5,432
  6. Step 6: Final answer
    x = 12,378.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.