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Finding the Fourth Proportional to 269,220.78, 403,832.79 and 82,232.28

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Solution

The fourth proportional to 269,220.78, 403,832.79 and 82,232.28 is: 123,348.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,220.78 : 403,832.79 = 82,232.28 : x
  2. Step 2: Convert to fraction form
    269,220.78/403,832.79 = 82,232.28/x
  3. Step 3: Cross multiply
    269,220.78x = 403,832.79 × 82,232.28
  4. Step 4: Simplify right side
    269,220.78x = 33,208,091,060.46
  5. Step 5: Solve for x
    x = 33,208,091,060.46/269,220.78
  6. Step 6: Final answer
    x = 123,348.91

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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.