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Finding the Fourth Proportional to 18,673.29, 25,772.13 and 11,958.57

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Solution

The fourth proportional to 18,673.29, 25,772.13 and 11,958.57 is: 16,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,673.29 : 25,772.13 = 11,958.57 : x
  2. Step 2: Convert to fraction form
    18,673.29/25,772.13 = 11,958.57/x
  3. Step 3: Cross multiply
    18,673.29x = 25,772.13 × 11,958.57
  4. Step 4: Simplify right side
    18,673.29x = 308,197,820.65
  5. Step 5: Solve for x
    x = 308,197,820.65/18,673.29
  6. Step 6: Final answer
    x = 16,504.74

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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.