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Finding the Fourth Proportional to 14,231.92, 19,642.02 and 7,944.70

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Solution

The fourth proportional to 14,231.92, 19,642.02 and 7,944.70 is: 10,964.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,231.92 : 19,642.02 = 7,944.70 : x
  2. Step 2: Convert to fraction form
    14,231.92/19,642.02 = 7,944.70/x
  3. Step 3: Cross multiply
    14,231.92x = 19,642.02 × 7,944.70
  4. Step 4: Simplify right side
    14,231.92x = 156,049,956.29
  5. Step 5: Solve for x
    x = 156,049,956.29/14,231.92
  6. Step 6: Final answer
    x = 10,964.79

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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.