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Finding the Fourth Proportional to 19,896.62, 27,456.76 and 10,944.12

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Solution

The fourth proportional to 19,896.62, 27,456.76 and 10,944.12 is: 15,102.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,896.62 : 27,456.76 = 10,944.12 : x
  2. Step 2: Convert to fraction form
    19,896.62/27,456.76 = 10,944.12/x
  3. Step 3: Cross multiply
    19,896.62x = 27,456.76 × 10,944.12
  4. Step 4: Simplify right side
    19,896.62x = 300,490,021.53
  5. Step 5: Solve for x
    x = 300,490,021.53/19,896.62
  6. Step 6: Final answer
    x = 15,102.57

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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.