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Finding the Third Proportional to 4,491 and 5,436

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Solution

The third proportional to 4,491 and 5,436 is: 6,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,491 : 5,436 = 5,436 : x
  2. Step 2: Convert to fraction form
    4,491/5,436 = 5,436/x
  3. Step 3: Cross multiply
    4,491x = 5,436 × 5,436
  4. Step 4: Simplify right side
    4,491x = 29,550,096
  5. Step 5: Solve for x
    x = 29,550,096/4,491
  6. Step 6: Final answer
    x = 6,579.85

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.