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Finding the Fourth Proportional to 4,781.96, 7,164.84 and 2,929.20

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Solution

The fourth proportional to 4,781.96, 7,164.84 and 2,929.20 is: 4,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.96 : 7,164.84 = 2,929.20 : x
  2. Step 2: Convert to fraction form
    4,781.96/7,164.84 = 2,929.20/x
  3. Step 3: Cross multiply
    4,781.96x = 7,164.84 × 2,929.20
  4. Step 4: Simplify right side
    4,781.96x = 20,987,249.33
  5. Step 5: Solve for x
    x = 20,987,249.33/4,781.96
  6. Step 6: Final answer
    x = 4,388.84

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