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Finding the Third Proportional to 2,963 and 6,990

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Solution

The third proportional to 2,963 and 6,990 is: 16,490.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963 : 6,990 = 6,990 : x
  2. Step 2: Convert to fraction form
    2,963/6,990 = 6,990/x
  3. Step 3: Cross multiply
    2,963x = 6,990 × 6,990
  4. Step 4: Simplify right side
    2,963x = 48,860,100
  5. Step 5: Solve for x
    x = 48,860,100/2,963
  6. Step 6: Final answer
    x = 16,490.08

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.