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Finding the Fourth Proportional to 8,673.54, 11,968.79 and 5,315.89

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Solution

The fourth proportional to 8,673.54, 11,968.79 and 5,315.89 is: 7,335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.54 : 11,968.79 = 5,315.89 : x
  2. Step 2: Convert to fraction form
    8,673.54/11,968.79 = 5,315.89/x
  3. Step 3: Cross multiply
    8,673.54x = 11,968.79 × 5,315.89
  4. Step 4: Simplify right side
    8,673.54x = 63,624,714.57
  5. Step 5: Solve for x
    x = 63,624,714.57/8,673.54
  6. Step 6: Final answer
    x = 7,335.50

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