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Finding the Fourth Proportional to 18,205.56, 25,086.71 and 13,956.71

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Solution

The fourth proportional to 18,205.56, 25,086.71 and 13,956.71 is: 19,231.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,205.56 : 25,086.71 = 13,956.71 : x
  2. Step 2: Convert to fraction form
    18,205.56/25,086.71 = 13,956.71/x
  3. Step 3: Cross multiply
    18,205.56x = 25,086.71 × 13,956.71
  4. Step 4: Simplify right side
    18,205.56x = 350,127,845.78
  5. Step 5: Solve for x
    x = 350,127,845.78/18,205.56
  6. Step 6: Final answer
    x = 19,231.92

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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.