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Finding the Third Proportional to 3,040 and 4,721

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Solution

The third proportional to 3,040 and 4,721 is: 7,331.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040 : 4,721 = 4,721 : x
  2. Step 2: Convert to fraction form
    3,040/4,721 = 4,721/x
  3. Step 3: Cross multiply
    3,040x = 4,721 × 4,721
  4. Step 4: Simplify right side
    3,040x = 22,287,841
  5. Step 5: Solve for x
    x = 22,287,841/3,040
  6. Step 6: Final answer
    x = 7,331.53

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.