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Finding the Fourth Proportional to 17,176.40, 25,764.60 and 13,720.40

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Solution

The fourth proportional to 17,176.40, 25,764.60 and 13,720.40 is: 20,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,176.40 : 25,764.60 = 13,720.40 : x
  2. Step 2: Convert to fraction form
    17,176.40/25,764.60 = 13,720.40/x
  3. Step 3: Cross multiply
    17,176.40x = 25,764.60 × 13,720.40
  4. Step 4: Simplify right side
    17,176.40x = 353,500,617.84
  5. Step 5: Solve for x
    x = 353,500,617.84/17,176.40
  6. Step 6: Final answer
    x = 20,580.60

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