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Finding the Fourth Proportional to 219,805.49, 329,662.09 and 61,997.03

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Solution

The fourth proportional to 219,805.49, 329,662.09 and 61,997.03 is: 92,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,805.49 : 329,662.09 = 61,997.03 : x
  2. Step 2: Convert to fraction form
    219,805.49/329,662.09 = 61,997.03/x
  3. Step 3: Cross multiply
    219,805.49x = 329,662.09 × 61,997.03
  4. Step 4: Simplify right side
    219,805.49x = 20,438,072,003.36
  5. Step 5: Solve for x
    x = 20,438,072,003.36/219,805.49
  6. Step 6: Final answer
    x = 92,982.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.