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Finding the Third Proportional to 4,640 and 9,766

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Solution

The third proportional to 4,640 and 9,766 is: 20,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,640 : 9,766 = 9,766 : x
  2. Step 2: Convert to fraction form
    4,640/9,766 = 9,766/x
  3. Step 3: Cross multiply
    4,640x = 9,766 × 9,766
  4. Step 4: Simplify right side
    4,640x = 95,374,756
  5. Step 5: Solve for x
    x = 95,374,756/4,640
  6. Step 6: Final answer
    x = 20,554.90

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.