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Finding the Third Proportional to 3,156 and 4,697

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Solution

The third proportional to 3,156 and 4,697 is: 6,990.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156 : 4,697 = 4,697 : x
  2. Step 2: Convert to fraction form
    3,156/4,697 = 4,697/x
  3. Step 3: Cross multiply
    3,156x = 4,697 × 4,697
  4. Step 4: Simplify right side
    3,156x = 22,061,809
  5. Step 5: Solve for x
    x = 22,061,809/3,156
  6. Step 6: Final answer
    x = 6,990.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.