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Finding the Third Proportional to 15,390 and 24,765

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Solution

The third proportional to 15,390 and 24,765 is: 39,850.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,390 : 24,765 = 24,765 : x
  2. Step 2: Convert to fraction form
    15,390/24,765 = 24,765/x
  3. Step 3: Cross multiply
    15,390x = 24,765 × 24,765
  4. Step 4: Simplify right side
    15,390x = 613,305,225
  5. Step 5: Solve for x
    x = 613,305,225/15,390
  6. Step 6: Final answer
    x = 39,850.89

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.