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Finding the Third Proportional to 18,630.50 and 28,186

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Solution

The third proportional to 18,630.50 and 28,186 is: 42,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.50 : 28,186 = 28,186 : x
  2. Step 2: Convert to fraction form
    18,630.50/28,186 = 28,186/x
  3. Step 3: Cross multiply
    18,630.50x = 28,186 × 28,186
  4. Step 4: Simplify right side
    18,630.50x = 794,450,596
  5. Step 5: Solve for x
    x = 794,450,596/18,630.50
  6. Step 6: Final answer
    x = 42,642.47

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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.