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Finding the Third Proportional to 15,921 and 34,984.13

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Solution

The third proportional to 15,921 and 34,984.13 is: 76,872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921 : 34,984.13 = 34,984.13 : x
  2. Step 2: Convert to fraction form
    15,921/34,984.13 = 34,984.13/x
  3. Step 3: Cross multiply
    15,921x = 34,984.13 × 34,984.13
  4. Step 4: Simplify right side
    15,921x = 1,223,889,002.02
  5. Step 5: Solve for x
    x = 1,223,889,002.02/15,921
  6. Step 6: Final answer
    x = 76,872.62

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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.