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Finding the Third Proportional to 11,972 and 25,816

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Solution

The third proportional to 11,972 and 25,816 is: 55,668.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972 : 25,816 = 25,816 : x
  2. Step 2: Convert to fraction form
    11,972/25,816 = 25,816/x
  3. Step 3: Cross multiply
    11,972x = 25,816 × 25,816
  4. Step 4: Simplify right side
    11,972x = 666,465,856
  5. Step 5: Solve for x
    x = 666,465,856/11,972
  6. Step 6: Final answer
    x = 55,668.72

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.