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Finding the Third Proportional to 18,631.50 and 29,918.25

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Solution

The third proportional to 18,631.50 and 29,918.25 is: 48,042.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.50 : 29,918.25 = 29,918.25 : x
  2. Step 2: Convert to fraction form
    18,631.50/29,918.25 = 29,918.25/x
  3. Step 3: Cross multiply
    18,631.50x = 29,918.25 × 29,918.25
  4. Step 4: Simplify right side
    18,631.50x = 895,101,683.06
  5. Step 5: Solve for x
    x = 895,101,683.06/18,631.50
  6. Step 6: Final answer
    x = 48,042.38

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.