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Finding the Fourth Proportional to 18,980.64, 26,193.24 and 11,027.52

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Solution

The fourth proportional to 18,980.64, 26,193.24 and 11,027.52 is: 15,217.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.64 : 26,193.24 = 11,027.52 : x
  2. Step 2: Convert to fraction form
    18,980.64/26,193.24 = 11,027.52/x
  3. Step 3: Cross multiply
    18,980.64x = 26,193.24 × 11,027.52
  4. Step 4: Simplify right side
    18,980.64x = 288,846,477.96
  5. Step 5: Solve for x
    x = 288,846,477.96/18,980.64
  6. Step 6: Final answer
    x = 15,217.95

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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.