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Finding the Third Proportional to 3,557 and 7,761

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Solution

The third proportional to 3,557 and 7,761 is: 16,933.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,557 : 7,761 = 7,761 : x
  2. Step 2: Convert to fraction form
    3,557/7,761 = 7,761/x
  3. Step 3: Cross multiply
    3,557x = 7,761 × 7,761
  4. Step 4: Simplify right side
    3,557x = 60,233,121
  5. Step 5: Solve for x
    x = 60,233,121/3,557
  6. Step 6: Final answer
    x = 16,933.69

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.