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Finding the Fourth Proportional to 115,809.40, 173,722.20 and 45,679.60

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Solution

The fourth proportional to 115,809.40, 173,722.20 and 45,679.60 is: 68,522.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.40 : 173,722.20 = 45,679.60 : x
  2. Step 2: Convert to fraction form
    115,809.40/173,722.20 = 45,679.60/x
  3. Step 3: Cross multiply
    115,809.40x = 173,722.20 × 45,679.60
  4. Step 4: Simplify right side
    115,809.40x = 7,935,560,607.12
  5. Step 5: Solve for x
    x = 7,935,560,607.12/115,809.40
  6. Step 6: Final answer
    x = 68,522.59

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