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Finding the Fourth Proportional to 311,513.29, 467,269.89 and 74,855.97

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Solution

The fourth proportional to 311,513.29, 467,269.89 and 74,855.97 is: 112,283.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,513.29 : 467,269.89 = 74,855.97 : x
  2. Step 2: Convert to fraction form
    311,513.29/467,269.89 = 74,855.97/x
  3. Step 3: Cross multiply
    311,513.29x = 467,269.89 × 74,855.97
  4. Step 4: Simplify right side
    311,513.29x = 34,977,940,493.46
  5. Step 5: Solve for x
    x = 34,977,940,493.46/311,513.29
  6. Step 6: Final answer
    x = 112,283.94

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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.