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Finding the Fourth Proportional to 207,415.40, 311,276.70 and 82,845.80

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Solution

The fourth proportional to 207,415.40, 311,276.70 and 82,845.80 is: 124,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,415.40 : 311,276.70 = 82,845.80 : x
  2. Step 2: Convert to fraction form
    207,415.40/311,276.70 = 82,845.80/x
  3. Step 3: Cross multiply
    207,415.40x = 311,276.70 × 82,845.80
  4. Step 4: Simplify right side
    207,415.40x = 25,787,967,232.86
  5. Step 5: Solve for x
    x = 25,787,967,232.86/207,415.40
  6. Step 6: Final answer
    x = 124,330.05

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