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Finding the Third Proportional to 18,070.50 and 38,328

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Solution

The third proportional to 18,070.50 and 38,328 is: 81,294.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,070.50 : 38,328 = 38,328 : x
  2. Step 2: Convert to fraction form
    18,070.50/38,328 = 38,328/x
  3. Step 3: Cross multiply
    18,070.50x = 38,328 × 38,328
  4. Step 4: Simplify right side
    18,070.50x = 1,469,035,584
  5. Step 5: Solve for x
    x = 1,469,035,584/18,070.50
  6. Step 6: Final answer
    x = 81,294.68

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.