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Finding the Fourth Proportional to 99,202.88, 136,896.26 and 53,879.87

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Solution

The fourth proportional to 99,202.88, 136,896.26 and 53,879.87 is: 74,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,202.88 : 136,896.26 = 53,879.87 : x
  2. Step 2: Convert to fraction form
    99,202.88/136,896.26 = 53,879.87/x
  3. Step 3: Cross multiply
    99,202.88x = 136,896.26 × 53,879.87
  4. Step 4: Simplify right side
    99,202.88x = 7,375,951,738.41
  5. Step 5: Solve for x
    x = 7,375,951,738.41/99,202.88
  6. Step 6: Final answer
    x = 74,352.20

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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.