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Finding the Fourth Proportional to 578,648.40, 867,972.60 and 368,437.20

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Solution

The fourth proportional to 578,648.40, 867,972.60 and 368,437.20 is: 552,655.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,648.40 : 867,972.60 = 368,437.20 : x
  2. Step 2: Convert to fraction form
    578,648.40/867,972.60 = 368,437.20/x
  3. Step 3: Cross multiply
    578,648.40x = 867,972.60 × 368,437.20
  4. Step 4: Simplify right side
    578,648.40x = 319,793,394,420.72
  5. Step 5: Solve for x
    x = 319,793,394,420.72/578,648.40
  6. Step 6: Final answer
    x = 552,655.80

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