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Finding the Fourth Proportional to 477,940.80, 716,911.20 and 265,364.40

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Solution

The fourth proportional to 477,940.80, 716,911.20 and 265,364.40 is: 398,046.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,940.80 : 716,911.20 = 265,364.40 : x
  2. Step 2: Convert to fraction form
    477,940.80/716,911.20 = 265,364.40/x
  3. Step 3: Cross multiply
    477,940.80x = 716,911.20 × 265,364.40
  4. Step 4: Simplify right side
    477,940.80x = 190,242,710,441.28
  5. Step 5: Solve for x
    x = 190,242,710,441.28/477,940.80
  6. Step 6: Final answer
    x = 398,046.60

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