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Finding the Fourth Proportional to 19,381.52, 26,745.24 and 11,422.24

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Solution

The fourth proportional to 19,381.52, 26,745.24 and 11,422.24 is: 15,761.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.52 : 26,745.24 = 11,422.24 : x
  2. Step 2: Convert to fraction form
    19,381.52/26,745.24 = 11,422.24/x
  3. Step 3: Cross multiply
    19,381.52x = 26,745.24 × 11,422.24
  4. Step 4: Simplify right side
    19,381.52x = 305,490,550.14
  5. Step 5: Solve for x
    x = 305,490,550.14/19,381.52
  6. Step 6: Final answer
    x = 15,761.95

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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.