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Finding the Fourth Proportional to 122,418.88, 183,684.85 and 55,879.41

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Solution

The fourth proportional to 122,418.88, 183,684.85 and 55,879.41 is: 83,844.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,418.88 : 183,684.85 = 55,879.41 : x
  2. Step 2: Convert to fraction form
    122,418.88/183,684.85 = 55,879.41/x
  3. Step 3: Cross multiply
    122,418.88x = 183,684.85 × 55,879.41
  4. Step 4: Simplify right side
    122,418.88x = 10,264,201,043.94
  5. Step 5: Solve for x
    x = 10,264,201,043.94/122,418.88
  6. Step 6: Final answer
    x = 83,844.92

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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.