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Finding the Third Proportional to 3,758 and 5,179

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Solution

The third proportional to 3,758 and 5,179 is: 7,137.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,758 : 5,179 = 5,179 : x
  2. Step 2: Convert to fraction form
    3,758/5,179 = 5,179/x
  3. Step 3: Cross multiply
    3,758x = 5,179 × 5,179
  4. Step 4: Simplify right side
    3,758x = 26,822,041
  5. Step 5: Solve for x
    x = 26,822,041/3,758
  6. Step 6: Final answer
    x = 7,137.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.