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Finding the Fourth Proportional to 283,371.39, 391,046.89 and 154,311.39

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Solution

The fourth proportional to 283,371.39, 391,046.89 and 154,311.39 is: 212,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,371.39 : 391,046.89 = 154,311.39 : x
  2. Step 2: Convert to fraction form
    283,371.39/391,046.89 = 154,311.39/x
  3. Step 3: Cross multiply
    283,371.39x = 391,046.89 × 154,311.39
  4. Step 4: Simplify right side
    283,371.39x = 60,342,989,604.54
  5. Step 5: Solve for x
    x = 60,342,989,604.54/283,371.39
  6. Step 6: Final answer
    x = 212,946.66

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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.