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Finding the Fourth Proportional to 65,266.68, 90,062.42 and 36,195.88

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Solution

The fourth proportional to 65,266.68, 90,062.42 and 36,195.88 is: 49,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,266.68 : 90,062.42 = 36,195.88 : x
  2. Step 2: Convert to fraction form
    65,266.68/90,062.42 = 36,195.88/x
  3. Step 3: Cross multiply
    65,266.68x = 90,062.42 × 36,195.88
  4. Step 4: Simplify right side
    65,266.68x = 3,259,888,546.83
  5. Step 5: Solve for x
    x = 3,259,888,546.83/65,266.68
  6. Step 6: Final answer
    x = 49,947.21

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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.