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Finding the Fourth Proportional to 256,593.78, 354,090.48 and 140,309.97

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Solution

The fourth proportional to 256,593.78, 354,090.48 and 140,309.97 is: 193,622.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,593.78 : 354,090.48 = 140,309.97 : x
  2. Step 2: Convert to fraction form
    256,593.78/354,090.48 = 140,309.97/x
  3. Step 3: Cross multiply
    256,593.78x = 354,090.48 × 140,309.97
  4. Step 4: Simplify right side
    256,593.78x = 49,682,424,626.09
  5. Step 5: Solve for x
    x = 49,682,424,626.09/256,593.78
  6. Step 6: Final answer
    x = 193,622.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.