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Finding the Third Proportional to 4,423.50 and 9,711

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Solution

The third proportional to 4,423.50 and 9,711 is: 21,318.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,423.50 : 9,711 = 9,711 : x
  2. Step 2: Convert to fraction form
    4,423.50/9,711 = 9,711/x
  3. Step 3: Cross multiply
    4,423.50x = 9,711 × 9,711
  4. Step 4: Simplify right side
    4,423.50x = 94,303,521
  5. Step 5: Solve for x
    x = 94,303,521/4,423.50
  6. Step 6: Final answer
    x = 21,318.76

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.