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Finding the Fourth Proportional to 251,147.79, 376,786.89 and 82,694.25

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Solution

The fourth proportional to 251,147.79, 376,786.89 and 82,694.25 is: 124,062.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,147.79 : 376,786.89 = 82,694.25 : x
  2. Step 2: Convert to fraction form
    251,147.79/376,786.89 = 82,694.25/x
  3. Step 3: Cross multiply
    251,147.79x = 376,786.89 × 82,694.25
  4. Step 4: Simplify right side
    251,147.79x = 31,158,109,278.38
  5. Step 5: Solve for x
    x = 31,158,109,278.38/251,147.79
  6. Step 6: Final answer
    x = 124,062.84

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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.