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Finding the Third Proportional to 3,432 and 5,340

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Solution

The third proportional to 3,432 and 5,340 is: 8,308.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,432 : 5,340 = 5,340 : x
  2. Step 2: Convert to fraction form
    3,432/5,340 = 5,340/x
  3. Step 3: Cross multiply
    3,432x = 5,340 × 5,340
  4. Step 4: Simplify right side
    3,432x = 28,515,600
  5. Step 5: Solve for x
    x = 28,515,600/3,432
  6. Step 6: Final answer
    x = 8,308.74

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.