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Finding the Third Proportional to 4,671 and 9,861.75

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Solution

The third proportional to 4,671 and 9,861.75 is: 20,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,671 : 9,861.75 = 9,861.75 : x
  2. Step 2: Convert to fraction form
    4,671/9,861.75 = 9,861.75/x
  3. Step 3: Cross multiply
    4,671x = 9,861.75 × 9,861.75
  4. Step 4: Simplify right side
    4,671x = 97,254,113.06
  5. Step 5: Solve for x
    x = 97,254,113.06/4,671
  6. Step 6: Final answer
    x = 20,820.83

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.