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Finding the Third Proportional to 4,457 and 6,908

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Solution

The third proportional to 4,457 and 6,908 is: 10,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,457 : 6,908 = 6,908 : x
  2. Step 2: Convert to fraction form
    4,457/6,908 = 6,908/x
  3. Step 3: Cross multiply
    4,457x = 6,908 × 6,908
  4. Step 4: Simplify right side
    4,457x = 47,720,464
  5. Step 5: Solve for x
    x = 47,720,464/4,457
  6. Step 6: Final answer
    x = 10,706.86

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.