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Finding the Fourth Proportional to 118,620.21, 177,930.43 and 48,499.52

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Solution

The fourth proportional to 118,620.21, 177,930.43 and 48,499.52 is: 72,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,620.21 : 177,930.43 = 48,499.52 : x
  2. Step 2: Convert to fraction form
    118,620.21/177,930.43 = 48,499.52/x
  3. Step 3: Cross multiply
    118,620.21x = 177,930.43 × 48,499.52
  4. Step 4: Simplify right side
    118,620.21x = 8,629,540,771.97
  5. Step 5: Solve for x
    x = 8,629,540,771.97/118,620.21
  6. Step 6: Final answer
    x = 72,749.33

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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.