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Finding the Fourth Proportional to 593.06, 889.67 and 318.78

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Solution

The fourth proportional to 593.06, 889.67 and 318.78 is: 478.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    593.06 : 889.67 = 318.78 : x
  2. Step 2: Convert to fraction form
    593.06/889.67 = 318.78/x
  3. Step 3: Cross multiply
    593.06x = 889.67 × 318.78
  4. Step 4: Simplify right side
    593.06x = 283,609.80
  5. Step 5: Solve for x
    x = 283,609.80/593.06
  6. Step 6: Final answer
    x = 478.22

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