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Finding the Fourth Proportional to 75,896.80, 113,845.20 and 31,500.70

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Solution

The fourth proportional to 75,896.80, 113,845.20 and 31,500.70 is: 47,251.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,896.80 : 113,845.20 = 31,500.70 : x
  2. Step 2: Convert to fraction form
    75,896.80/113,845.20 = 31,500.70/x
  3. Step 3: Cross multiply
    75,896.80x = 113,845.20 × 31,500.70
  4. Step 4: Simplify right side
    75,896.80x = 3,586,203,491.64
  5. Step 5: Solve for x
    x = 3,586,203,491.64/75,896.80
  6. Step 6: Final answer
    x = 47,251.05

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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.