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Finding the Fourth Proportional to 226,712.80, 340,331.10 and 121,736.80

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Solution

The fourth proportional to 226,712.80, 340,331.10 and 121,736.80 is: 182,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,712.80 : 340,331.10 = 121,736.80 : x
  2. Step 2: Convert to fraction form
    226,712.80/340,331.10 = 121,736.80/x
  3. Step 3: Cross multiply
    226,712.80x = 340,331.10 × 121,736.80
  4. Step 4: Simplify right side
    226,712.80x = 41,430,819,054.48
  5. Step 5: Solve for x
    x = 41,430,819,054.48/226,712.80
  6. Step 6: Final answer
    x = 182,745.83

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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.