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Finding the Fourth Proportional to 65,805.98, 90,811.96 and 35,591.33

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Solution

The fourth proportional to 65,805.98, 90,811.96 and 35,591.33 is: 49,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,805.98 : 90,811.96 = 35,591.33 : x
  2. Step 2: Convert to fraction form
    65,805.98/90,811.96 = 35,591.33/x
  3. Step 3: Cross multiply
    65,805.98x = 90,811.96 × 35,591.33
  4. Step 4: Simplify right side
    65,805.98x = 3,232,118,574.36
  5. Step 5: Solve for x
    x = 3,232,118,574.36/65,805.98
  6. Step 6: Final answer
    x = 49,115.88

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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.