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Finding the Fourth Proportional to 118,806.12, 163,890.24 and 73,469.64

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Solution

The fourth proportional to 118,806.12, 163,890.24 and 73,469.64 is: 101,349.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,806.12 : 163,890.24 = 73,469.64 : x
  2. Step 2: Convert to fraction form
    118,806.12/163,890.24 = 73,469.64/x
  3. Step 3: Cross multiply
    118,806.12x = 163,890.24 × 73,469.64
  4. Step 4: Simplify right side
    118,806.12x = 12,040,956,932.31
  5. Step 5: Solve for x
    x = 12,040,956,932.31/118,806.12
  6. Step 6: Final answer
    x = 101,349.64

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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.