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Finding the Third Proportional to 2,947 and 4,317

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Solution

The third proportional to 2,947 and 4,317 is: 6,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947 : 4,317 = 4,317 : x
  2. Step 2: Convert to fraction form
    2,947/4,317 = 4,317/x
  3. Step 3: Cross multiply
    2,947x = 4,317 × 4,317
  4. Step 4: Simplify right side
    2,947x = 18,636,489
  5. Step 5: Solve for x
    x = 18,636,489/2,947
  6. Step 6: Final answer
    x = 6,323.88

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.