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Finding the Third Proportional to 4,669 and 8,870

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Solution

The third proportional to 4,669 and 8,870 is: 16,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,669 : 8,870 = 8,870 : x
  2. Step 2: Convert to fraction form
    4,669/8,870 = 8,870/x
  3. Step 3: Cross multiply
    4,669x = 8,870 × 8,870
  4. Step 4: Simplify right side
    4,669x = 78,676,900
  5. Step 5: Solve for x
    x = 78,676,900/4,669
  6. Step 6: Final answer
    x = 16,850.91

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.