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Finding the Fourth Proportional to 66,086.09, 91,198.89 and 35,871.39

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Solution

The fourth proportional to 66,086.09, 91,198.89 and 35,871.39 is: 49,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.09 : 91,198.89 = 35,871.39 : x
  2. Step 2: Convert to fraction form
    66,086.09/91,198.89 = 35,871.39/x
  3. Step 3: Cross multiply
    66,086.09x = 91,198.89 × 35,871.39
  4. Step 4: Simplify right side
    66,086.09x = 3,271,431,234.61
  5. Step 5: Solve for x
    x = 3,271,431,234.61/66,086.09
  6. Step 6: Final answer
    x = 49,502.57

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1.5x scale

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.