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Finding the Fourth Proportional to 351,991.44, 486,149.11 and 238,617.36

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Solution

The fourth proportional to 351,991.44, 486,149.11 and 238,617.36 is: 329,563.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,991.44 : 486,149.11 = 238,617.36 : x
  2. Step 2: Convert to fraction form
    351,991.44/486,149.11 = 238,617.36/x
  3. Step 3: Cross multiply
    351,991.44x = 486,149.11 × 238,617.36
  4. Step 4: Simplify right side
    351,991.44x = 116,003,616,598.01
  5. Step 5: Solve for x
    x = 116,003,616,598.01/351,991.44
  6. Step 6: Final answer
    x = 329,563.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.