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Finding the Fourth Proportional to 109,782.20, 164,576.10 and 72,360.20

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Solution

The fourth proportional to 109,782.20, 164,576.10 and 72,360.20 is: 108,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.20 : 164,576.10 = 72,360.20 : x
  2. Step 2: Convert to fraction form
    109,782.20/164,576.10 = 72,360.20/x
  3. Step 3: Cross multiply
    109,782.20x = 164,576.10 × 72,360.20
  4. Step 4: Simplify right side
    109,782.20x = 11,908,759,511.22
  5. Step 5: Solve for x
    x = 11,908,759,511.22/109,782.20
  6. Step 6: Final answer
    x = 108,476.23

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