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Finding the Fourth Proportional to 262,862.80, 394,553.40 and 129,893.20

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Solution

The fourth proportional to 262,862.80, 394,553.40 and 129,893.20 is: 194,967.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,862.80 : 394,553.40 = 129,893.20 : x
  2. Step 2: Convert to fraction form
    262,862.80/394,553.40 = 129,893.20/x
  3. Step 3: Cross multiply
    262,862.80x = 394,553.40 × 129,893.20
  4. Step 4: Simplify right side
    262,862.80x = 51,249,803,696.88
  5. Step 5: Solve for x
    x = 51,249,803,696.88/262,862.80
  6. Step 6: Final answer
    x = 194,967.88

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