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Finding the Fourth Proportional to 220,716.84, 331,078.29 and 62,945.28

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Solution

The fourth proportional to 220,716.84, 331,078.29 and 62,945.28 is: 94,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,716.84 : 331,078.29 = 62,945.28 : x
  2. Step 2: Convert to fraction form
    220,716.84/331,078.29 = 62,945.28/x
  3. Step 3: Cross multiply
    220,716.84x = 331,078.29 × 62,945.28
  4. Step 4: Simplify right side
    220,716.84x = 20,839,815,665.97
  5. Step 5: Solve for x
    x = 20,839,815,665.97/220,716.84
  6. Step 6: Final answer
    x = 94,418.78

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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.