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Finding the Fourth Proportional to 65,747.92, 90,730.44 and 35,938

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Solution

The fourth proportional to 65,747.92, 90,730.44 and 35,938 is: 49,593.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,747.92 : 90,730.44 = 35,938 : x
  2. Step 2: Convert to fraction form
    65,747.92/90,730.44 = 35,938/x
  3. Step 3: Cross multiply
    65,747.92x = 90,730.44 × 35,938
  4. Step 4: Simplify right side
    65,747.92x = 3,260,670,552.72
  5. Step 5: Solve for x
    x = 3,260,670,552.72/65,747.92
  6. Step 6: Final answer
    x = 49,593.52

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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.