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Finding the Fourth Proportional to 55,687.92, 76,847.96 and 30,192.88

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Solution

The fourth proportional to 55,687.92, 76,847.96 and 30,192.88 is: 41,665.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,687.92 : 76,847.96 = 30,192.88 : x
  2. Step 2: Convert to fraction form
    55,687.92/76,847.96 = 30,192.88/x
  3. Step 3: Cross multiply
    55,687.92x = 76,847.96 × 30,192.88
  4. Step 4: Simplify right side
    55,687.92x = 2,320,261,234.52
  5. Step 5: Solve for x
    x = 2,320,261,234.52/55,687.92
  6. Step 6: Final answer
    x = 41,665.43

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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.