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Finding the Third Proportional to 2,979 and 4,563

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Solution

The third proportional to 2,979 and 4,563 is: 6,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979 : 4,563 = 4,563 : x
  2. Step 2: Convert to fraction form
    2,979/4,563 = 4,563/x
  3. Step 3: Cross multiply
    2,979x = 4,563 × 4,563
  4. Step 4: Simplify right side
    2,979x = 20,820,969
  5. Step 5: Solve for x
    x = 20,820,969/2,979
  6. Step 6: Final answer
    x = 6,989.25

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.