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Finding the Fourth Proportional to 408,887.80, 613,331.70 and 282,916.60

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Solution

The fourth proportional to 408,887.80, 613,331.70 and 282,916.60 is: 424,374.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,887.80 : 613,331.70 = 282,916.60 : x
  2. Step 2: Convert to fraction form
    408,887.80/613,331.70 = 282,916.60/x
  3. Step 3: Cross multiply
    408,887.80x = 613,331.70 × 282,916.60
  4. Step 4: Simplify right side
    408,887.80x = 173,521,719,236.22
  5. Step 5: Solve for x
    x = 173,521,719,236.22/408,887.80
  6. Step 6: Final answer
    x = 424,374.90

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