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Finding the Fourth Proportional to 579,246.40, 869,128.80 and 263,540.80

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Solution

The fourth proportional to 579,246.40, 869,128.80 and 263,540.80 is: 395,429.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,246.40 : 869,128.80 = 263,540.80 : x
  2. Step 2: Convert to fraction form
    579,246.40/869,128.80 = 263,540.80/x
  3. Step 3: Cross multiply
    579,246.40x = 869,128.80 × 263,540.80
  4. Step 4: Simplify right side
    579,246.40x = 229,050,899,255.04
  5. Step 5: Solve for x
    x = 229,050,899,255.04/579,246.40
  6. Step 6: Final answer
    x = 395,429.13

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