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Finding the Fourth Proportional to 17,485.11, 26,241.49 and 7,631.31

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Solution

The fourth proportional to 17,485.11, 26,241.49 and 7,631.31 is: 11,453.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,485.11 : 26,241.49 = 7,631.31 : x
  2. Step 2: Convert to fraction form
    17,485.11/26,241.49 = 7,631.31/x
  3. Step 3: Cross multiply
    17,485.11x = 26,241.49 × 7,631.31
  4. Step 4: Simplify right side
    17,485.11x = 200,256,906.90
  5. Step 5: Solve for x
    x = 200,256,906.90/17,485.11
  6. Step 6: Final answer
    x = 11,453.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.