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Finding the Third Proportional to 18,447.50 and 28,392

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Solution

The third proportional to 18,447.50 and 28,392 is: 43,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.50 : 28,392 = 28,392 : x
  2. Step 2: Convert to fraction form
    18,447.50/28,392 = 28,392/x
  3. Step 3: Cross multiply
    18,447.50x = 28,392 × 28,392
  4. Step 4: Simplify right side
    18,447.50x = 806,105,664
  5. Step 5: Solve for x
    x = 806,105,664/18,447.50
  6. Step 6: Final answer
    x = 43,697.28

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.