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Finding the Fourth Proportional to 622,057.60, 933,086.40 and 408,246.40

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Solution

The fourth proportional to 622,057.60, 933,086.40 and 408,246.40 is: 612,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,057.60 : 933,086.40 = 408,246.40 : x
  2. Step 2: Convert to fraction form
    622,057.60/933,086.40 = 408,246.40/x
  3. Step 3: Cross multiply
    622,057.60x = 933,086.40 × 408,246.40
  4. Step 4: Simplify right side
    622,057.60x = 380,929,163,688.96
  5. Step 5: Solve for x
    x = 380,929,163,688.96/622,057.60
  6. Step 6: Final answer
    x = 612,369.60

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