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Finding the Fourth Proportional to 18,625.71, 27,956.12 and 6,790.92

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Solution

The fourth proportional to 18,625.71, 27,956.12 and 6,790.92 is: 10,192.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,625.71 : 27,956.12 = 6,790.92 : x
  2. Step 2: Convert to fraction form
    18,625.71/27,956.12 = 6,790.92/x
  3. Step 3: Cross multiply
    18,625.71x = 27,956.12 × 6,790.92
  4. Step 4: Simplify right side
    18,625.71x = 189,847,740.48
  5. Step 5: Solve for x
    x = 189,847,740.48/18,625.71
  6. Step 6: Final answer
    x = 10,192.78

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1.5x scale

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.