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Finding the Fourth Proportional to 18,275.56, 27,411.30 and 5,128.44

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Solution

The fourth proportional to 18,275.56, 27,411.30 and 5,128.44 is: 7,692.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,275.56 : 27,411.30 = 5,128.44 : x
  2. Step 2: Convert to fraction form
    18,275.56/27,411.30 = 5,128.44/x
  3. Step 3: Cross multiply
    18,275.56x = 27,411.30 × 5,128.44
  4. Step 4: Simplify right side
    18,275.56x = 140,577,207.37
  5. Step 5: Solve for x
    x = 140,577,207.37/18,275.56
  6. Step 6: Final answer
    x = 7,692.09

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