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Finding the Fourth Proportional to 286,714.20, 430,157.70 and 203,770.20

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Solution

The fourth proportional to 286,714.20, 430,157.70 and 203,770.20 is: 305,716.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,714.20 : 430,157.70 = 203,770.20 : x
  2. Step 2: Convert to fraction form
    286,714.20/430,157.70 = 203,770.20/x
  3. Step 3: Cross multiply
    286,714.20x = 430,157.70 × 203,770.20
  4. Step 4: Simplify right side
    286,714.20x = 87,653,320,560.54
  5. Step 5: Solve for x
    x = 87,653,320,560.54/286,714.20
  6. Step 6: Final answer
    x = 305,716.71

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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.