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Finding the Fourth Proportional to 484,109.60, 726,261.60 and 405,766.40

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Solution

The fourth proportional to 484,109.60, 726,261.60 and 405,766.40 is: 608,731.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,109.60 : 726,261.60 = 405,766.40 : x
  2. Step 2: Convert to fraction form
    484,109.60/726,261.60 = 405,766.40/x
  3. Step 3: Cross multiply
    484,109.60x = 726,261.60 × 405,766.40
  4. Step 4: Simplify right side
    484,109.60x = 294,692,554,890.24
  5. Step 5: Solve for x
    x = 294,692,554,890.24/484,109.60
  6. Step 6: Final answer
    x = 608,731.07

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