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Finding the Fourth Proportional to 19,176.70, 28,747.95 and 7,487.20

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Solution

The fourth proportional to 19,176.70, 28,747.95 and 7,487.20 is: 11,224.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176.70 : 28,747.95 = 7,487.20 : x
  2. Step 2: Convert to fraction form
    19,176.70/28,747.95 = 7,487.20/x
  3. Step 3: Cross multiply
    19,176.70x = 28,747.95 × 7,487.20
  4. Step 4: Simplify right side
    19,176.70x = 215,241,651.24
  5. Step 5: Solve for x
    x = 215,241,651.24/19,176.70
  6. Step 6: Final answer
    x = 11,224.12

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