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Finding the Third Proportional to 5,091 and 6,624

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Solution

The third proportional to 5,091 and 6,624 is: 8,618.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091 : 6,624 = 6,624 : x
  2. Step 2: Convert to fraction form
    5,091/6,624 = 6,624/x
  3. Step 3: Cross multiply
    5,091x = 6,624 × 6,624
  4. Step 4: Simplify right side
    5,091x = 43,877,376
  5. Step 5: Solve for x
    x = 43,877,376/5,091
  6. Step 6: Final answer
    x = 8,618.62

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.