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Finding the Fourth Proportional to 26,984.61, 40,481.79 and 12,200.49

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Solution

The fourth proportional to 26,984.61, 40,481.79 and 12,200.49 is: 18,302.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,984.61 : 40,481.79 = 12,200.49 : x
  2. Step 2: Convert to fraction form
    26,984.61/40,481.79 = 12,200.49/x
  3. Step 3: Cross multiply
    26,984.61x = 40,481.79 × 12,200.49
  4. Step 4: Simplify right side
    26,984.61x = 493,897,613.07
  5. Step 5: Solve for x
    x = 493,897,613.07/26,984.61
  6. Step 6: Final answer
    x = 18,302.94

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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.