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Finding the Fourth Proportional to 171,805.40, 257,227.27 and 129,553.25

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Solution

The fourth proportional to 171,805.40, 257,227.27 and 129,553.25 is: 193,967.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,805.40 : 257,227.27 = 129,553.25 : x
  2. Step 2: Convert to fraction form
    171,805.40/257,227.27 = 129,553.25/x
  3. Step 3: Cross multiply
    171,805.40x = 257,227.27 × 129,553.25
  4. Step 4: Simplify right side
    171,805.40x = 33,324,628,294.93
  5. Step 5: Solve for x
    x = 33,324,628,294.93/171,805.40
  6. Step 6: Final answer
    x = 193,967.29

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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.