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Finding the Fourth Proportional to 19,057.74, 28,581.21 and 12,027.21

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Solution

The fourth proportional to 19,057.74, 28,581.21 and 12,027.21 is: 18,037.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,057.74 : 28,581.21 = 12,027.21 : x
  2. Step 2: Convert to fraction form
    19,057.74/28,581.21 = 12,027.21/x
  3. Step 3: Cross multiply
    19,057.74x = 28,581.21 × 12,027.21
  4. Step 4: Simplify right side
    19,057.74x = 343,752,214.72
  5. Step 5: Solve for x
    x = 343,752,214.72/19,057.74
  6. Step 6: Final answer
    x = 18,037.41

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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.