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Finding the Fourth Proportional to 311,523.50, 467,285.21 and 74,866.18

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Solution

The fourth proportional to 311,523.50, 467,285.21 and 74,866.18 is: 112,299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,523.50 : 467,285.21 = 74,866.18 : x
  2. Step 2: Convert to fraction form
    311,523.50/467,285.21 = 74,866.18/x
  3. Step 3: Cross multiply
    311,523.50x = 467,285.21 × 74,866.18
  4. Step 4: Simplify right side
    311,523.50x = 34,983,855,932.44
  5. Step 5: Solve for x
    x = 34,983,855,932.44/311,523.50
  6. Step 6: Final answer
    x = 112,299.25

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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.