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Finding the Third Proportional to 25,760 and 38,928

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Solution

The third proportional to 25,760 and 38,928 is: 58,827.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,760 : 38,928 = 38,928 : x
  2. Step 2: Convert to fraction form
    25,760/38,928 = 38,928/x
  3. Step 3: Cross multiply
    25,760x = 38,928 × 38,928
  4. Step 4: Simplify right side
    25,760x = 1,515,389,184
  5. Step 5: Solve for x
    x = 1,515,389,184/25,760
  6. Step 6: Final answer
    x = 58,827.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.