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Finding the Fourth Proportional to 21,550.01, 29,738.46 and 12,474.11

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Solution

The fourth proportional to 21,550.01, 29,738.46 and 12,474.11 is: 17,213.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,550.01 : 29,738.46 = 12,474.11 : x
  2. Step 2: Convert to fraction form
    21,550.01/29,738.46 = 12,474.11/x
  3. Step 3: Cross multiply
    21,550.01x = 29,738.46 × 12,474.11
  4. Step 4: Simplify right side
    21,550.01x = 370,960,704.95
  5. Step 5: Solve for x
    x = 370,960,704.95/21,550.01
  6. Step 6: Final answer
    x = 17,213.95

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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.