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Finding the Third Proportional to 19,489 and 30,373

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Solution

The third proportional to 19,489 and 30,373 is: 47,335.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,489 : 30,373 = 30,373 : x
  2. Step 2: Convert to fraction form
    19,489/30,373 = 30,373/x
  3. Step 3: Cross multiply
    19,489x = 30,373 × 30,373
  4. Step 4: Simplify right side
    19,489x = 922,519,129
  5. Step 5: Solve for x
    x = 922,519,129/19,489
  6. Step 6: Final answer
    x = 47,335.38

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.