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Finding the Fourth Proportional to 619,838.46, 855,311.34 and 347,936.27

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Solution

The fourth proportional to 619,838.46, 855,311.34 and 347,936.27 is: 480,115.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,838.46 : 855,311.34 = 347,936.27 : x
  2. Step 2: Convert to fraction form
    619,838.46/855,311.34 = 347,936.27/x
  3. Step 3: Cross multiply
    619,838.46x = 855,311.34 × 347,936.27
  4. Step 4: Simplify right side
    619,838.46x = 297,593,832,399.37
  5. Step 5: Solve for x
    x = 297,593,832,399.37/619,838.46
  6. Step 6: Final answer
    x = 480,115.15

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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.