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Finding the Fourth Proportional to 251,936.70, 347,697.18 and 188,163.78

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Solution

The fourth proportional to 251,936.70, 347,697.18 and 188,163.78 is: 259,684.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,936.70 : 347,697.18 = 188,163.78 : x
  2. Step 2: Convert to fraction form
    251,936.70/347,697.18 = 188,163.78/x
  3. Step 3: Cross multiply
    251,936.70x = 347,697.18 × 188,163.78
  4. Step 4: Simplify right side
    251,936.70x = 65,424,015,684.14
  5. Step 5: Solve for x
    x = 65,424,015,684.14/251,936.70
  6. Step 6: Final answer
    x = 259,684.34

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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.