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Finding the Fourth Proportional to 83,892.70, 125,841.93 and 28,481.50

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Solution

The fourth proportional to 83,892.70, 125,841.93 and 28,481.50 is: 42,723.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,892.70 : 125,841.93 = 28,481.50 : x
  2. Step 2: Convert to fraction form
    83,892.70/125,841.93 = 28,481.50/x
  3. Step 3: Cross multiply
    83,892.70x = 125,841.93 × 28,481.50
  4. Step 4: Simplify right side
    83,892.70x = 3,584,166,929.30
  5. Step 5: Solve for x
    x = 3,584,166,929.30/83,892.70
  6. Step 6: Final answer
    x = 42,723.23

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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.