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Finding the Fourth Proportional to 403,725.20, 605,587.80 and 262,720.40

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Solution

The fourth proportional to 403,725.20, 605,587.80 and 262,720.40 is: 394,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,725.20 : 605,587.80 = 262,720.40 : x
  2. Step 2: Convert to fraction form
    403,725.20/605,587.80 = 262,720.40/x
  3. Step 3: Cross multiply
    403,725.20x = 605,587.80 × 262,720.40
  4. Step 4: Simplify right side
    403,725.20x = 159,100,269,051.12
  5. Step 5: Solve for x
    x = 159,100,269,051.12/403,725.20
  6. Step 6: Final answer
    x = 394,080.60

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