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Finding the Fourth Proportional to 19,003.79, 26,227.44 and 15,811.44

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Solution

The fourth proportional to 19,003.79, 26,227.44 and 15,811.44 is: 21,821.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,003.79 : 26,227.44 = 15,811.44 : x
  2. Step 2: Convert to fraction form
    19,003.79/26,227.44 = 15,811.44/x
  3. Step 3: Cross multiply
    19,003.79x = 26,227.44 × 15,811.44
  4. Step 4: Simplify right side
    19,003.79x = 414,693,593.91
  5. Step 5: Solve for x
    x = 414,693,593.91/19,003.79
  6. Step 6: Final answer
    x = 21,821.63

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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.