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Finding the Fourth Proportional to 404,743.80, 607,115.70 and 393,079.80

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Solution

The fourth proportional to 404,743.80, 607,115.70 and 393,079.80 is: 589,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,743.80 : 607,115.70 = 393,079.80 : x
  2. Step 2: Convert to fraction form
    404,743.80/607,115.70 = 393,079.80/x
  3. Step 3: Cross multiply
    404,743.80x = 607,115.70 × 393,079.80
  4. Step 4: Simplify right side
    404,743.80x = 238,644,917,932.86
  5. Step 5: Solve for x
    x = 238,644,917,932.86/404,743.80
  6. Step 6: Final answer
    x = 589,619.70

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