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Finding the Third Proportional to 4,111 and 9,040

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Solution

The third proportional to 4,111 and 9,040 is: 19,878.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,111 : 9,040 = 9,040 : x
  2. Step 2: Convert to fraction form
    4,111/9,040 = 9,040/x
  3. Step 3: Cross multiply
    4,111x = 9,040 × 9,040
  4. Step 4: Simplify right side
    4,111x = 81,721,600
  5. Step 5: Solve for x
    x = 81,721,600/4,111
  6. Step 6: Final answer
    x = 19,878.76

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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.