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Finding the Fourth Proportional to 283,414.17, 391,103.58 and 154,349.73

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Solution

The fourth proportional to 283,414.17, 391,103.58 and 154,349.73 is: 212,998.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,414.17 : 391,103.58 = 154,349.73 : x
  2. Step 2: Convert to fraction form
    283,414.17/391,103.58 = 154,349.73/x
  3. Step 3: Cross multiply
    283,414.17x = 391,103.58 × 154,349.73
  4. Step 4: Simplify right side
    283,414.17x = 60,366,731,975.03
  5. Step 5: Solve for x
    x = 60,366,731,975.03/283,414.17
  6. Step 6: Final answer
    x = 212,998.28

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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.