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Finding the Third Proportional to 1,418 and 3,100

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Solution

The third proportional to 1,418 and 3,100 is: 6,777.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418 : 3,100 = 3,100 : x
  2. Step 2: Convert to fraction form
    1,418/3,100 = 3,100/x
  3. Step 3: Cross multiply
    1,418x = 3,100 × 3,100
  4. Step 4: Simplify right side
    1,418x = 9,610,000
  5. Step 5: Solve for x
    x = 9,610,000/1,418
  6. Step 6: Final answer
    x = 6,777.15

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.