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Finding the Fourth Proportional to 413,519.40, 620,279.10 and 396,023.40

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Solution

The fourth proportional to 413,519.40, 620,279.10 and 396,023.40 is: 594,035.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,519.40 : 620,279.10 = 396,023.40 : x
  2. Step 2: Convert to fraction form
    413,519.40/620,279.10 = 396,023.40/x
  3. Step 3: Cross multiply
    413,519.40x = 620,279.10 × 396,023.40
  4. Step 4: Simplify right side
    413,519.40x = 245,645,038,130.94
  5. Step 5: Solve for x
    x = 245,645,038,130.94/413,519.40
  6. Step 6: Final answer
    x = 594,035.10

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