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Finding the Fourth Proportional to 53,755.82, 80,650.05 and 21,718.46

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Solution

The fourth proportional to 53,755.82, 80,650.05 and 21,718.46 is: 32,584.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,755.82 : 80,650.05 = 21,718.46 : x
  2. Step 2: Convert to fraction form
    53,755.82/80,650.05 = 21,718.46/x
  3. Step 3: Cross multiply
    53,755.82x = 80,650.05 × 21,718.46
  4. Step 4: Simplify right side
    53,755.82x = 1,751,594,884.92
  5. Step 5: Solve for x
    x = 1,751,594,884.92/53,755.82
  6. Step 6: Final answer
    x = 32,584.28

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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.