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Finding the Third Proportional to 4,330 and 6,979

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Solution

The third proportional to 4,330 and 6,979 is: 11,248.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,330 : 6,979 = 6,979 : x
  2. Step 2: Convert to fraction form
    4,330/6,979 = 6,979/x
  3. Step 3: Cross multiply
    4,330x = 6,979 × 6,979
  4. Step 4: Simplify right side
    4,330x = 48,706,441
  5. Step 5: Solve for x
    x = 48,706,441/4,330
  6. Step 6: Final answer
    x = 11,248.60

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.