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Finding the Fourth Proportional to 19,272.84, 28,910.25 and 5,422.92

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Solution

The fourth proportional to 19,272.84, 28,910.25 and 5,422.92 is: 8,134.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,272.84 : 28,910.25 = 5,422.92 : x
  2. Step 2: Convert to fraction form
    19,272.84/28,910.25 = 5,422.92/x
  3. Step 3: Cross multiply
    19,272.84x = 28,910.25 × 5,422.92
  4. Step 4: Simplify right side
    19,272.84x = 156,777,972.93
  5. Step 5: Solve for x
    x = 156,777,972.93/19,272.84
  6. Step 6: Final answer
    x = 8,134.66

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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.