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Finding the Fourth Proportional to 402,857.20, 603,556.80 and 192,030.40

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Solution

The fourth proportional to 402,857.20, 603,556.80 and 192,030.40 is: 287,698.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,857.20 : 603,556.80 = 192,030.40 : x
  2. Step 2: Convert to fraction form
    402,857.20/603,556.80 = 192,030.40/x
  3. Step 3: Cross multiply
    402,857.20x = 603,556.80 × 192,030.40
  4. Step 4: Simplify right side
    402,857.20x = 115,901,253,726.72
  5. Step 5: Solve for x
    x = 115,901,253,726.72/402,857.20
  6. Step 6: Final answer
    x = 287,698.11

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