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Finding the Third Proportional to 2,947 and 6,904

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Solution

The third proportional to 2,947 and 6,904 is: 16,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947 : 6,904 = 6,904 : x
  2. Step 2: Convert to fraction form
    2,947/6,904 = 6,904/x
  3. Step 3: Cross multiply
    2,947x = 6,904 × 6,904
  4. Step 4: Simplify right side
    2,947x = 47,665,216
  5. Step 5: Solve for x
    x = 47,665,216/2,947
  6. Step 6: Final answer
    x = 16,174.15

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.