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Finding the Third Proportional to 6,221 and 9,647

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Solution

The third proportional to 6,221 and 9,647 is: 14,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221 : 9,647 = 9,647 : x
  2. Step 2: Convert to fraction form
    6,221/9,647 = 9,647/x
  3. Step 3: Cross multiply
    6,221x = 9,647 × 9,647
  4. Step 4: Simplify right side
    6,221x = 93,064,609
  5. Step 5: Solve for x
    x = 93,064,609/6,221
  6. Step 6: Final answer
    x = 14,959.75

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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.