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Finding the Fourth Proportional to 58,768.80, 81,099.60 and 31,911

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Solution

The fourth proportional to 58,768.80, 81,099.60 and 31,911 is: 44,036.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,768.80 : 81,099.60 = 31,911 : x
  2. Step 2: Convert to fraction form
    58,768.80/81,099.60 = 31,911/x
  3. Step 3: Cross multiply
    58,768.80x = 81,099.60 × 31,911
  4. Step 4: Simplify right side
    58,768.80x = 2,587,969,335.60
  5. Step 5: Solve for x
    x = 2,587,969,335.60/58,768.80
  6. Step 6: Final answer
    x = 44,036.45

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