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Finding the Third Proportional to 18,501.75 and 28,213.13

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Solution

The third proportional to 18,501.75 and 28,213.13 is: 43,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,501.75 : 28,213.13 = 28,213.13 : x
  2. Step 2: Convert to fraction form
    18,501.75/28,213.13 = 28,213.13/x
  3. Step 3: Cross multiply
    18,501.75x = 28,213.13 × 28,213.13
  4. Step 4: Simplify right side
    18,501.75x = 795,980,422.27
  5. Step 5: Solve for x
    x = 795,980,422.27/18,501.75
  6. Step 6: Final answer
    x = 43,021.90

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.