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Finding the Third Proportional to 19,407 and 26,721

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Solution

The third proportional to 19,407 and 26,721 is: 36,791.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407 : 26,721 = 26,721 : x
  2. Step 2: Convert to fraction form
    19,407/26,721 = 26,721/x
  3. Step 3: Cross multiply
    19,407x = 26,721 × 26,721
  4. Step 4: Simplify right side
    19,407x = 714,011,841
  5. Step 5: Solve for x
    x = 714,011,841/19,407
  6. Step 6: Final answer
    x = 36,791.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.