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Finding the Fourth Proportional to 262,788.92, 394,135.68 and 92,035.72

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Solution

The fourth proportional to 262,788.92, 394,135.68 and 92,035.72 is: 138,036.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,788.92 : 394,135.68 = 92,035.72 : x
  2. Step 2: Convert to fraction form
    262,788.92/394,135.68 = 92,035.72/x
  3. Step 3: Cross multiply
    262,788.92x = 394,135.68 × 92,035.72
  4. Step 4: Simplify right side
    262,788.92x = 36,274,561,086.49
  5. Step 5: Solve for x
    x = 36,274,561,086.49/262,788.92
  6. Step 6: Final answer
    x = 138,036.87

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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.