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Finding the Third Proportional to 21,134.25 and 31,635

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Solution

The third proportional to 21,134.25 and 31,635 is: 47,353.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.25 : 31,635 = 31,635 : x
  2. Step 2: Convert to fraction form
    21,134.25/31,635 = 31,635/x
  3. Step 3: Cross multiply
    21,134.25x = 31,635 × 31,635
  4. Step 4: Simplify right side
    21,134.25x = 1,000,773,225
  5. Step 5: Solve for x
    x = 1,000,773,225/21,134.25
  6. Step 6: Final answer
    x = 47,353.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.