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Finding the Fourth Proportional to 85,174.28, 127,611.47 and 75,896.87

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Solution

The fourth proportional to 85,174.28, 127,611.47 and 75,896.87 is: 113,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,174.28 : 127,611.47 = 75,896.87 : x
  2. Step 2: Convert to fraction form
    85,174.28/127,611.47 = 75,896.87/x
  3. Step 3: Cross multiply
    85,174.28x = 127,611.47 × 75,896.87
  4. Step 4: Simplify right side
    85,174.28x = 9,685,310,131.56
  5. Step 5: Solve for x
    x = 9,685,310,131.56/85,174.28
  6. Step 6: Final answer
    x = 113,711.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.