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Finding the Fourth Proportional to 7,176.81, 9,905.72 and 5,663.46

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Solution

The fourth proportional to 7,176.81, 9,905.72 and 5,663.46 is: 7,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.81 : 9,905.72 = 5,663.46 : x
  2. Step 2: Convert to fraction form
    7,176.81/9,905.72 = 5,663.46/x
  3. Step 3: Cross multiply
    7,176.81x = 9,905.72 × 5,663.46
  4. Step 4: Simplify right side
    7,176.81x = 56,100,648.99
  5. Step 5: Solve for x
    x = 56,100,648.99/7,176.81
  6. Step 6: Final answer
    x = 7,816.93

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