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Finding the Fourth Proportional to 18,442.56, 27,665.28 and 6,755.52

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Solution

The fourth proportional to 18,442.56, 27,665.28 and 6,755.52 is: 10,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.56 : 27,665.28 = 6,755.52 : x
  2. Step 2: Convert to fraction form
    18,442.56/27,665.28 = 6,755.52/x
  3. Step 3: Cross multiply
    18,442.56x = 27,665.28 × 6,755.52
  4. Step 4: Simplify right side
    18,442.56x = 186,893,352.35
  5. Step 5: Solve for x
    x = 186,893,352.35/18,442.56
  6. Step 6: Final answer
    x = 10,133.81

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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.