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Finding the Fourth Proportional to 40,872.79, 61,310.34 and 11,290.63

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Solution

The fourth proportional to 40,872.79, 61,310.34 and 11,290.63 is: 16,936.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,872.79 : 61,310.34 = 11,290.63 : x
  2. Step 2: Convert to fraction form
    40,872.79/61,310.34 = 11,290.63/x
  3. Step 3: Cross multiply
    40,872.79x = 61,310.34 × 11,290.63
  4. Step 4: Simplify right side
    40,872.79x = 692,232,001.11
  5. Step 5: Solve for x
    x = 692,232,001.11/40,872.79
  6. Step 6: Final answer
    x = 16,936.26

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