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Finding the Third Proportional to 4,020 and 9,661

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Solution

The third proportional to 4,020 and 9,661 is: 23,217.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,020 : 9,661 = 9,661 : x
  2. Step 2: Convert to fraction form
    4,020/9,661 = 9,661/x
  3. Step 3: Cross multiply
    4,020x = 9,661 × 9,661
  4. Step 4: Simplify right side
    4,020x = 93,334,921
  5. Step 5: Solve for x
    x = 93,334,921/4,020
  6. Step 6: Final answer
    x = 23,217.64

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These problems maintain the same ratio (2.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.