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Finding the Fourth Proportional to 12,906.41, 19,359.20 and 3,672.41

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Solution

The fourth proportional to 12,906.41, 19,359.20 and 3,672.41 is: 5,508.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.41 : 19,359.20 = 3,672.41 : x
  2. Step 2: Convert to fraction form
    12,906.41/19,359.20 = 3,672.41/x
  3. Step 3: Cross multiply
    12,906.41x = 19,359.20 × 3,672.41
  4. Step 4: Simplify right side
    12,906.41x = 71,094,832.06
  5. Step 5: Solve for x
    x = 71,094,832.06/12,906.41
  6. Step 6: Final answer
    x = 5,508.49

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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.