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Finding the Third Proportional to 1,611 and 3,810

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Solution

The third proportional to 1,611 and 3,810 is: 9,010.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611 : 3,810 = 3,810 : x
  2. Step 2: Convert to fraction form
    1,611/3,810 = 3,810/x
  3. Step 3: Cross multiply
    1,611x = 3,810 × 3,810
  4. Step 4: Simplify right side
    1,611x = 14,516,100
  5. Step 5: Solve for x
    x = 14,516,100/1,611
  6. Step 6: Final answer
    x = 9,010.61

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.