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Finding the Fourth Proportional to 659,628.40, 989,442.60 and 376,193.20

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Solution

The fourth proportional to 659,628.40, 989,442.60 and 376,193.20 is: 564,289.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,628.40 : 989,442.60 = 376,193.20 : x
  2. Step 2: Convert to fraction form
    659,628.40/989,442.60 = 376,193.20/x
  3. Step 3: Cross multiply
    659,628.40x = 989,442.60 × 376,193.20
  4. Step 4: Simplify right side
    659,628.40x = 372,221,577,910.32
  5. Step 5: Solve for x
    x = 372,221,577,910.32/659,628.40
  6. Step 6: Final answer
    x = 564,289.80

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