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Finding the Fourth Proportional to 275,107.72, 412,579.34 and 82,974.10

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Solution

The fourth proportional to 275,107.72, 412,579.34 and 82,974.10 is: 124,436.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,107.72 : 412,579.34 = 82,974.10 : x
  2. Step 2: Convert to fraction form
    275,107.72/412,579.34 = 82,974.10/x
  3. Step 3: Cross multiply
    275,107.72x = 412,579.34 × 82,974.10
  4. Step 4: Simplify right side
    275,107.72x = 34,233,399,415.09
  5. Step 5: Solve for x
    x = 34,233,399,415.09/275,107.72
  6. Step 6: Final answer
    x = 124,436.35

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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.