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Finding the Fourth Proportional to 228,393.37, 315,178.49 and 126,418.93

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Solution

The fourth proportional to 228,393.37, 315,178.49 and 126,418.93 is: 174,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,393.37 : 315,178.49 = 126,418.93 : x
  2. Step 2: Convert to fraction form
    228,393.37/315,178.49 = 126,418.93/x
  3. Step 3: Cross multiply
    228,393.37x = 315,178.49 × 126,418.93
  4. Step 4: Simplify right side
    228,393.37x = 39,844,526,992.92
  5. Step 5: Solve for x
    x = 39,844,526,992.92/228,393.37
  6. Step 6: Final answer
    x = 174,455.71

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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.