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Finding the Third Proportional to 5,115 and 11,066

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Solution

The third proportional to 5,115 and 11,066 is: 23,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115 : 11,066 = 11,066 : x
  2. Step 2: Convert to fraction form
    5,115/11,066 = 11,066/x
  3. Step 3: Cross multiply
    5,115x = 11,066 × 11,066
  4. Step 4: Simplify right side
    5,115x = 122,456,356
  5. Step 5: Solve for x
    x = 122,456,356/5,115
  6. Step 6: Final answer
    x = 23,940.64

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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.