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Finding the Fourth Proportional to 3,615.91, 5,420.22 and 1,669.48

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Solution

The fourth proportional to 3,615.91, 5,420.22 and 1,669.48 is: 2,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.91 : 5,420.22 = 1,669.48 : x
  2. Step 2: Convert to fraction form
    3,615.91/5,420.22 = 1,669.48/x
  3. Step 3: Cross multiply
    3,615.91x = 5,420.22 × 1,669.48
  4. Step 4: Simplify right side
    3,615.91x = 9,048,948.89
  5. Step 5: Solve for x
    x = 9,048,948.89/3,615.91
  6. Step 6: Final answer
    x = 2,502.54

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