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Finding the Third Proportional to 4,486 and 4,891

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Solution

The third proportional to 4,486 and 4,891 is: 5,332.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,486 : 4,891 = 4,891 : x
  2. Step 2: Convert to fraction form
    4,486/4,891 = 4,891/x
  3. Step 3: Cross multiply
    4,486x = 4,891 × 4,891
  4. Step 4: Simplify right side
    4,486x = 23,921,881
  5. Step 5: Solve for x
    x = 23,921,881/4,486
  6. Step 6: Final answer
    x = 5,332.56

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.