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Finding the Fourth Proportional to 394,230.78, 543,848.22 and 258,204.87

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Solution

The fourth proportional to 394,230.78, 543,848.22 and 258,204.87 is: 356,198.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,230.78 : 543,848.22 = 258,204.87 : x
  2. Step 2: Convert to fraction form
    394,230.78/543,848.22 = 258,204.87/x
  3. Step 3: Cross multiply
    394,230.78x = 543,848.22 × 258,204.87
  4. Step 4: Simplify right side
    394,230.78x = 140,424,258,944.83
  5. Step 5: Solve for x
    x = 140,424,258,944.83/394,230.78
  6. Step 6: Final answer
    x = 356,198.11

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1.5x scale

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.