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Finding the Fourth Proportional to 13,961.20, 19,264.92 and 7,994.48

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Solution

The fourth proportional to 13,961.20, 19,264.92 and 7,994.48 is: 11,031.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,961.20 : 19,264.92 = 7,994.48 : x
  2. Step 2: Convert to fraction form
    13,961.20/19,264.92 = 7,994.48/x
  3. Step 3: Cross multiply
    13,961.20x = 19,264.92 × 7,994.48
  4. Step 4: Simplify right side
    13,961.20x = 154,013,017.64
  5. Step 5: Solve for x
    x = 154,013,017.64/13,961.20
  6. Step 6: Final answer
    x = 11,031.50

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