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Finding the Fourth Proportional to 18,471.72, 25,484.70 and 11,304.97

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Solution

The fourth proportional to 18,471.72, 25,484.70 and 11,304.97 is: 15,597.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.72 : 25,484.70 = 11,304.97 : x
  2. Step 2: Convert to fraction form
    18,471.72/25,484.70 = 11,304.97/x
  3. Step 3: Cross multiply
    18,471.72x = 25,484.70 × 11,304.97
  4. Step 4: Simplify right side
    18,471.72x = 288,103,715.85
  5. Step 5: Solve for x
    x = 288,103,715.85/18,471.72
  6. Step 6: Final answer
    x = 15,597.02

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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.