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Finding the Third Proportional to 18,733.50 and 40,221

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Solution

The third proportional to 18,733.50 and 40,221 is: 86,354.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,733.50 : 40,221 = 40,221 : x
  2. Step 2: Convert to fraction form
    18,733.50/40,221 = 40,221/x
  3. Step 3: Cross multiply
    18,733.50x = 40,221 × 40,221
  4. Step 4: Simplify right side
    18,733.50x = 1,617,728,841
  5. Step 5: Solve for x
    x = 1,617,728,841/18,733.50
  6. Step 6: Final answer
    x = 86,354.86

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.