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Finding the Third Proportional to 4,906 and 5,638

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Solution

The third proportional to 4,906 and 5,638 is: 6,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906 : 5,638 = 5,638 : x
  2. Step 2: Convert to fraction form
    4,906/5,638 = 5,638/x
  3. Step 3: Cross multiply
    4,906x = 5,638 × 5,638
  4. Step 4: Simplify right side
    4,906x = 31,787,044
  5. Step 5: Solve for x
    x = 31,787,044/4,906
  6. Step 6: Final answer
    x = 6,479.22

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.