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Finding the Fourth Proportional to 354,618.40, 532,316.40 and 221,648.80

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Solution

The fourth proportional to 354,618.40, 532,316.40 and 221,648.80 is: 332,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,618.40 : 532,316.40 = 221,648.80 : x
  2. Step 2: Convert to fraction form
    354,618.40/532,316.40 = 221,648.80/x
  3. Step 3: Cross multiply
    354,618.40x = 532,316.40 × 221,648.80
  4. Step 4: Simplify right side
    354,618.40x = 117,987,291,280.32
  5. Step 5: Solve for x
    x = 117,987,291,280.32/354,618.40
  6. Step 6: Final answer
    x = 332,716.21

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