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Finding the Fourth Proportional to 19,603, 27,053.34 and 11,105.92

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Solution

The fourth proportional to 19,603, 27,053.34 and 11,105.92 is: 15,326.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603 : 27,053.34 = 11,105.92 : x
  2. Step 2: Convert to fraction form
    19,603/27,053.34 = 11,105.92/x
  3. Step 3: Cross multiply
    19,603x = 27,053.34 × 11,105.92
  4. Step 4: Simplify right side
    19,603x = 300,452,229.77
  5. Step 5: Solve for x
    x = 300,452,229.77/19,603
  6. Step 6: Final answer
    x = 15,326.85

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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.