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Finding the Fourth Proportional to 225,991.60, 339,246.60 and 137,345.20

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Solution

The fourth proportional to 225,991.60, 339,246.60 and 137,345.20 is: 206,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,991.60 : 339,246.60 = 137,345.20 : x
  2. Step 2: Convert to fraction form
    225,991.60/339,246.60 = 137,345.20/x
  3. Step 3: Cross multiply
    225,991.60x = 339,246.60 × 137,345.20
  4. Step 4: Simplify right side
    225,991.60x = 46,593,892,126.32
  5. Step 5: Solve for x
    x = 46,593,892,126.32/225,991.60
  6. Step 6: Final answer
    x = 206,175.33

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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.