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Finding the Fourth Proportional to 355,772.05, 533,665.83 and 142,640.33

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Solution

The fourth proportional to 355,772.05, 533,665.83 and 142,640.33 is: 213,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,772.05 : 533,665.83 = 142,640.33 : x
  2. Step 2: Convert to fraction form
    355,772.05/533,665.83 = 142,640.33/x
  3. Step 3: Cross multiply
    355,772.05x = 533,665.83 × 142,640.33
  4. Step 4: Simplify right side
    355,772.05x = 76,122,267,967.50
  5. Step 5: Solve for x
    x = 76,122,267,967.50/355,772.05
  6. Step 6: Final answer
    x = 213,963.60

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