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Finding the Fourth Proportional to 307,431.72, 458,091.44 and 273,894.08

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Solution

The fourth proportional to 307,431.72, 458,091.44 and 273,894.08 is: 408,118.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,431.72 : 458,091.44 = 273,894.08 : x
  2. Step 2: Convert to fraction form
    307,431.72/458,091.44 = 273,894.08/x
  3. Step 3: Cross multiply
    307,431.72x = 458,091.44 × 273,894.08
  4. Step 4: Simplify right side
    307,431.72x = 125,468,533,514.68
  5. Step 5: Solve for x
    x = 125,468,533,514.68/307,431.72
  6. Step 6: Final answer
    x = 408,118.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.