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Finding the Fourth Proportional to 319,067.46, 440,311.17 and 173,872.92

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Solution

The fourth proportional to 319,067.46, 440,311.17 and 173,872.92 is: 239,943.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,067.46 : 440,311.17 = 173,872.92 : x
  2. Step 2: Convert to fraction form
    319,067.46/440,311.17 = 173,872.92/x
  3. Step 3: Cross multiply
    319,067.46x = 440,311.17 × 173,872.92
  4. Step 4: Simplify right side
    319,067.46x = 76,558,188,836.52
  5. Step 5: Solve for x
    x = 76,558,188,836.52/319,067.46
  6. Step 6: Final answer
    x = 239,943.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.