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Finding the Third Proportional to 5,266 and 8,170

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Solution

The third proportional to 5,266 and 8,170 is: 12,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266 : 8,170 = 8,170 : x
  2. Step 2: Convert to fraction form
    5,266/8,170 = 8,170/x
  3. Step 3: Cross multiply
    5,266x = 8,170 × 8,170
  4. Step 4: Simplify right side
    5,266x = 66,748,900
  5. Step 5: Solve for x
    x = 66,748,900/5,266
  6. Step 6: Final answer
    x = 12,675.45

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.