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Finding the Fourth Proportional to 12,908.82, 19,363.22 and 3,674.82

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Solution

The fourth proportional to 12,908.82, 19,363.22 and 3,674.82 is: 5,512.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908.82 : 19,363.22 = 3,674.82 : x
  2. Step 2: Convert to fraction form
    12,908.82/19,363.22 = 3,674.82/x
  3. Step 3: Cross multiply
    12,908.82x = 19,363.22 × 3,674.82
  4. Step 4: Simplify right side
    12,908.82x = 71,156,348.12
  5. Step 5: Solve for x
    x = 71,156,348.12/12,908.82
  6. Step 6: Final answer
    x = 5,512.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.