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Finding the Third Proportional to 21,643 and 32,699

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Solution

The third proportional to 21,643 and 32,699 is: 49,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643 : 32,699 = 32,699 : x
  2. Step 2: Convert to fraction form
    21,643/32,699 = 32,699/x
  3. Step 3: Cross multiply
    21,643x = 32,699 × 32,699
  4. Step 4: Simplify right side
    21,643x = 1,069,224,601
  5. Step 5: Solve for x
    x = 1,069,224,601/21,643
  6. Step 6: Final answer
    x = 49,402.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.