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Finding the Third Proportional to 5,591 and 8,630

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Solution

The third proportional to 5,591 and 8,630 is: 13,320.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,591 : 8,630 = 8,630 : x
  2. Step 2: Convert to fraction form
    5,591/8,630 = 8,630/x
  3. Step 3: Cross multiply
    5,591x = 8,630 × 8,630
  4. Step 4: Simplify right side
    5,591x = 74,476,900
  5. Step 5: Solve for x
    x = 74,476,900/5,591
  6. Step 6: Final answer
    x = 13,320.85

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.