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Finding the Fourth Proportional to 483,218.40, 724,136.40 and 355,864.80

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Solution

The fourth proportional to 483,218.40, 724,136.40 and 355,864.80 is: 533,288.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,218.40 : 724,136.40 = 355,864.80 : x
  2. Step 2: Convert to fraction form
    483,218.40/724,136.40 = 355,864.80/x
  3. Step 3: Cross multiply
    483,218.40x = 724,136.40 × 355,864.80
  4. Step 4: Simplify right side
    483,218.40x = 257,694,655,158.72
  5. Step 5: Solve for x
    x = 257,694,655,158.72/483,218.40
  6. Step 6: Final answer
    x = 533,288.17

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