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Finding the Fourth Proportional to 357,786.80, 536,680.20 and 217,818.80

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Solution

The fourth proportional to 357,786.80, 536,680.20 and 217,818.80 is: 326,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,786.80 : 536,680.20 = 217,818.80 : x
  2. Step 2: Convert to fraction form
    357,786.80/536,680.20 = 217,818.80/x
  3. Step 3: Cross multiply
    357,786.80x = 536,680.20 × 217,818.80
  4. Step 4: Simplify right side
    357,786.80x = 116,899,037,147.76
  5. Step 5: Solve for x
    x = 116,899,037,147.76/357,786.80
  6. Step 6: Final answer
    x = 326,728.20

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