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Finding the Fourth Proportional to 71,072.73, 106,607.61 and 28,951.11

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Solution

The fourth proportional to 71,072.73, 106,607.61 and 28,951.11 is: 43,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.73 : 106,607.61 = 28,951.11 : x
  2. Step 2: Convert to fraction form
    71,072.73/106,607.61 = 28,951.11/x
  3. Step 3: Cross multiply
    71,072.73x = 106,607.61 × 28,951.11
  4. Step 4: Simplify right side
    71,072.73x = 3,086,408,643.95
  5. Step 5: Solve for x
    x = 3,086,408,643.95/71,072.73
  6. Step 6: Final answer
    x = 43,426.06

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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.