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Finding the Fourth Proportional to 65,940.43, 90,997.67 and 35,726.52

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Solution

The fourth proportional to 65,940.43, 90,997.67 and 35,726.52 is: 49,302.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,940.43 : 90,997.67 = 35,726.52 : x
  2. Step 2: Convert to fraction form
    65,940.43/90,997.67 = 35,726.52/x
  3. Step 3: Cross multiply
    65,940.43x = 90,997.67 × 35,726.52
  4. Step 4: Simplify right side
    65,940.43x = 3,251,029,898.58
  5. Step 5: Solve for x
    x = 3,251,029,898.58/65,940.43
  6. Step 6: Final answer
    x = 49,302.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.