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Finding the Fourth Proportional to 65,909.13, 90,954.66 and 35,694.49

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Solution

The fourth proportional to 65,909.13, 90,954.66 and 35,694.49 is: 49,258.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,909.13 : 90,954.66 = 35,694.49 : x
  2. Step 2: Convert to fraction form
    65,909.13/90,954.66 = 35,694.49/x
  3. Step 3: Cross multiply
    65,909.13x = 90,954.66 × 35,694.49
  4. Step 4: Simplify right side
    65,909.13x = 3,246,580,201.82
  5. Step 5: Solve for x
    x = 3,246,580,201.82/65,909.13
  6. Step 6: Final answer
    x = 49,258.43

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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.