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Finding the Fourth Proportional to 91,835.20, 137,720.40 and 32,672.80

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Solution

The fourth proportional to 91,835.20, 137,720.40 and 32,672.80 is: 48,997.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,835.20 : 137,720.40 = 32,672.80 : x
  2. Step 2: Convert to fraction form
    91,835.20/137,720.40 = 32,672.80/x
  3. Step 3: Cross multiply
    91,835.20x = 137,720.40 × 32,672.80
  4. Step 4: Simplify right side
    91,835.20x = 4,499,711,085.12
  5. Step 5: Solve for x
    x = 4,499,711,085.12/91,835.20
  6. Step 6: Final answer
    x = 48,997.67

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