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Finding the Third Proportional to 11,760 and 25,880

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Solution

The third proportional to 11,760 and 25,880 is: 56,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,760 : 25,880 = 25,880 : x
  2. Step 2: Convert to fraction form
    11,760/25,880 = 25,880/x
  3. Step 3: Cross multiply
    11,760x = 25,880 × 25,880
  4. Step 4: Simplify right side
    11,760x = 669,774,400
  5. Step 5: Solve for x
    x = 669,774,400/11,760
  6. Step 6: Final answer
    x = 56,953.61

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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.