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Finding the Third Proportional to 3,111 and 4,669

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Solution

The third proportional to 3,111 and 4,669 is: 7,007.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111 : 4,669 = 4,669 : x
  2. Step 2: Convert to fraction form
    3,111/4,669 = 4,669/x
  3. Step 3: Cross multiply
    3,111x = 4,669 × 4,669
  4. Step 4: Simplify right side
    3,111x = 21,799,561
  5. Step 5: Solve for x
    x = 21,799,561/3,111
  6. Step 6: Final answer
    x = 7,007.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.