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Finding the Fourth Proportional to 48,876.88, 67,446.06 and 28,734.61

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Solution

The fourth proportional to 48,876.88, 67,446.06 and 28,734.61 is: 39,651.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,876.88 : 67,446.06 = 28,734.61 : x
  2. Step 2: Convert to fraction form
    48,876.88/67,446.06 = 28,734.61/x
  3. Step 3: Cross multiply
    48,876.88x = 67,446.06 × 28,734.61
  4. Step 4: Simplify right side
    48,876.88x = 1,938,036,230.14
  5. Step 5: Solve for x
    x = 1,938,036,230.14/48,876.88
  6. Step 6: Final answer
    x = 39,651.39

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Why These Related Problems?

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