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Finding the Fourth Proportional to 217,861.66, 326,652.63 and 84,599.92

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Solution

The fourth proportional to 217,861.66, 326,652.63 and 84,599.92 is: 126,845.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,861.66 : 326,652.63 = 84,599.92 : x
  2. Step 2: Convert to fraction form
    217,861.66/326,652.63 = 84,599.92/x
  3. Step 3: Cross multiply
    217,861.66x = 326,652.63 × 84,599.92
  4. Step 4: Simplify right side
    217,861.66x = 27,634,786,365.79
  5. Step 5: Solve for x
    x = 27,634,786,365.79/217,861.66
  6. Step 6: Final answer
    x = 126,845.57

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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.