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Finding the Fourth Proportional to 472,907.60, 709,361.40 and 192,280.40

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Solution

The fourth proportional to 472,907.60, 709,361.40 and 192,280.40 is: 288,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,907.60 : 709,361.40 = 192,280.40 : x
  2. Step 2: Convert to fraction form
    472,907.60/709,361.40 = 192,280.40/x
  3. Step 3: Cross multiply
    472,907.60x = 709,361.40 × 192,280.40
  4. Step 4: Simplify right side
    472,907.60x = 136,396,293,736.56
  5. Step 5: Solve for x
    x = 136,396,293,736.56/472,907.60
  6. Step 6: Final answer
    x = 288,420.60

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