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Finding the Fourth Proportional to 73,638.81, 110,455.79 and 21,048.35

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Solution

The fourth proportional to 73,638.81, 110,455.79 and 21,048.35 is: 31,571.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,638.81 : 110,455.79 = 21,048.35 : x
  2. Step 2: Convert to fraction form
    73,638.81/110,455.79 = 21,048.35/x
  3. Step 3: Cross multiply
    73,638.81x = 110,455.79 × 21,048.35
  4. Step 4: Simplify right side
    73,638.81x = 2,324,911,469.93
  5. Step 5: Solve for x
    x = 2,324,911,469.93/73,638.81
  6. Step 6: Final answer
    x = 31,571.82

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