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Finding the Fourth Proportional to 30,272.48, 41,761.68 and 21,324.92

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Solution

The fourth proportional to 30,272.48, 41,761.68 and 21,324.92 is: 29,418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,272.48 : 41,761.68 = 21,324.92 : x
  2. Step 2: Convert to fraction form
    30,272.48/41,761.68 = 21,324.92/x
  3. Step 3: Cross multiply
    30,272.48x = 41,761.68 × 21,324.92
  4. Step 4: Simplify right side
    30,272.48x = 890,564,431.20
  5. Step 5: Solve for x
    x = 890,564,431.20/30,272.48
  6. Step 6: Final answer
    x = 29,418.28

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.