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Finding the Third Proportional to 2,188 and 3,179

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Solution

The third proportional to 2,188 and 3,179 is: 4,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188 : 3,179 = 3,179 : x
  2. Step 2: Convert to fraction form
    2,188/3,179 = 3,179/x
  3. Step 3: Cross multiply
    2,188x = 3,179 × 3,179
  4. Step 4: Simplify right side
    2,188x = 10,106,041
  5. Step 5: Solve for x
    x = 10,106,041/2,188
  6. Step 6: Final answer
    x = 4,618.85

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.