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Finding the Fourth Proportional to 118,879.01, 164,052.09 and 65,163.93

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Solution

The fourth proportional to 118,879.01, 164,052.09 and 65,163.93 is: 89,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,879.01 : 164,052.09 = 65,163.93 : x
  2. Step 2: Convert to fraction form
    118,879.01/164,052.09 = 65,163.93/x
  3. Step 3: Cross multiply
    118,879.01x = 164,052.09 × 65,163.93
  4. Step 4: Simplify right side
    118,879.01x = 10,690,278,909.11
  5. Step 5: Solve for x
    x = 10,690,278,909.11/118,879.01
  6. Step 6: Final answer
    x = 89,925.71

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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.