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Finding the Fourth Proportional to 13,925.55, 20,889.54 and 5,160.54

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Solution

The fourth proportional to 13,925.55, 20,889.54 and 5,160.54 is: 7,741.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.55 : 20,889.54 = 5,160.54 : x
  2. Step 2: Convert to fraction form
    13,925.55/20,889.54 = 5,160.54/x
  3. Step 3: Cross multiply
    13,925.55x = 20,889.54 × 5,160.54
  4. Step 4: Simplify right side
    13,925.55x = 107,801,306.75
  5. Step 5: Solve for x
    x = 107,801,306.75/13,925.55
  6. Step 6: Final answer
    x = 7,741.26

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