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Finding the Fourth Proportional to 127,895.89, 191,861.34 and 43,633.43

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Solution

The fourth proportional to 127,895.89, 191,861.34 and 43,633.43 is: 65,456.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,895.89 : 191,861.34 = 43,633.43 : x
  2. Step 2: Convert to fraction form
    127,895.89/191,861.34 = 43,633.43/x
  3. Step 3: Cross multiply
    127,895.89x = 191,861.34 × 43,633.43
  4. Step 4: Simplify right side
    127,895.89x = 8,371,568,348.60
  5. Step 5: Solve for x
    x = 8,371,568,348.60/127,895.89
  6. Step 6: Final answer
    x = 65,456.12

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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.