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Finding the Fourth Proportional to 76,938.80, 115,408.20 and 50,673.20

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Solution

The fourth proportional to 76,938.80, 115,408.20 and 50,673.20 is: 76,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,938.80 : 115,408.20 = 50,673.20 : x
  2. Step 2: Convert to fraction form
    76,938.80/115,408.20 = 50,673.20/x
  3. Step 3: Cross multiply
    76,938.80x = 115,408.20 × 50,673.20
  4. Step 4: Simplify right side
    76,938.80x = 5,848,102,800.24
  5. Step 5: Solve for x
    x = 5,848,102,800.24/76,938.80
  6. Step 6: Final answer
    x = 76,009.80

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