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Finding the Fourth Proportional to 13,153.78, 19,713.66 and 9,840.88

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Solution

The fourth proportional to 13,153.78, 19,713.66 and 9,840.88 is: 14,748.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.78 : 19,713.66 = 9,840.88 : x
  2. Step 2: Convert to fraction form
    13,153.78/19,713.66 = 9,840.88/x
  3. Step 3: Cross multiply
    13,153.78x = 19,713.66 × 9,840.88
  4. Step 4: Simplify right side
    13,153.78x = 193,999,762.42
  5. Step 5: Solve for x
    x = 193,999,762.42/13,153.78
  6. Step 6: Final answer
    x = 14,748.59

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