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Finding the Fourth Proportional to 65,806.44, 90,812.61 and 35,591.79

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Solution

The fourth proportional to 65,806.44, 90,812.61 and 35,591.79 is: 49,116.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,806.44 : 90,812.61 = 35,591.79 : x
  2. Step 2: Convert to fraction form
    65,806.44/90,812.61 = 35,591.79/x
  3. Step 3: Cross multiply
    65,806.44x = 90,812.61 × 35,591.79
  4. Step 4: Simplify right side
    65,806.44x = 3,232,183,344.47
  5. Step 5: Solve for x
    x = 3,232,183,344.47/65,806.44
  6. Step 6: Final answer
    x = 49,116.52

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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.