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Finding the Fourth Proportional to 73,232.20, 109,629.60 and 43,634.80

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Solution

The fourth proportional to 73,232.20, 109,629.60 and 43,634.80 is: 65,321.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,232.20 : 109,629.60 = 43,634.80 : x
  2. Step 2: Convert to fraction form
    73,232.20/109,629.60 = 43,634.80/x
  3. Step 3: Cross multiply
    73,232.20x = 109,629.60 × 43,634.80
  4. Step 4: Simplify right side
    73,232.20x = 4,783,665,670.08
  5. Step 5: Solve for x
    x = 4,783,665,670.08/73,232.20
  6. Step 6: Final answer
    x = 65,321.89

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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.