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Finding the Fourth Proportional to 18,672.94, 25,760.22 and 12,297.83

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Solution

The fourth proportional to 18,672.94, 25,760.22 and 12,297.83 is: 16,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.94 : 25,760.22 = 12,297.83 : x
  2. Step 2: Convert to fraction form
    18,672.94/25,760.22 = 12,297.83/x
  3. Step 3: Cross multiply
    18,672.94x = 25,760.22 × 12,297.83
  4. Step 4: Simplify right side
    18,672.94x = 316,794,806.32
  5. Step 5: Solve for x
    x = 316,794,806.32/18,672.94
  6. Step 6: Final answer
    x = 16,965.45

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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.