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Finding the Fourth Proportional to 351,466.26, 485,022.56 and 190,321.31

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Solution

The fourth proportional to 351,466.26, 485,022.56 and 190,321.31 is: 262,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,466.26 : 485,022.56 = 190,321.31 : x
  2. Step 2: Convert to fraction form
    351,466.26/485,022.56 = 190,321.31/x
  3. Step 3: Cross multiply
    351,466.26x = 485,022.56 × 190,321.31
  4. Step 4: Simplify right side
    351,466.26x = 92,310,128,998.75
  5. Step 5: Solve for x
    x = 92,310,128,998.75/351,466.26
  6. Step 6: Final answer
    x = 262,642.93

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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.