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Finding the Fourth Proportional to 66,372.99, 91,591.44 and 36,158.16

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Solution

The fourth proportional to 66,372.99, 91,591.44 and 36,158.16 is: 49,896.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,372.99 : 91,591.44 = 36,158.16 : x
  2. Step 2: Convert to fraction form
    66,372.99/91,591.44 = 36,158.16/x
  3. Step 3: Cross multiply
    66,372.99x = 91,591.44 × 36,158.16
  4. Step 4: Simplify right side
    66,372.99x = 3,311,777,942.15
  5. Step 5: Solve for x
    x = 3,311,777,942.15/66,372.99
  6. Step 6: Final answer
    x = 49,896.47

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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.