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Finding the Third Proportional to 4,391 and 8,548

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Solution

The third proportional to 4,391 and 8,548 is: 16,640.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391 : 8,548 = 8,548 : x
  2. Step 2: Convert to fraction form
    4,391/8,548 = 8,548/x
  3. Step 3: Cross multiply
    4,391x = 8,548 × 8,548
  4. Step 4: Simplify right side
    4,391x = 73,068,304
  5. Step 5: Solve for x
    x = 73,068,304/4,391
  6. Step 6: Final answer
    x = 16,640.47

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.