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Finding the Fourth Proportional to 85,654.56, 128,514.96 and 33,049.44

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Solution

The fourth proportional to 85,654.56, 128,514.96 and 33,049.44 is: 49,586.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,654.56 : 128,514.96 = 33,049.44 : x
  2. Step 2: Convert to fraction form
    85,654.56/128,514.96 = 33,049.44/x
  3. Step 3: Cross multiply
    85,654.56x = 128,514.96 × 33,049.44
  4. Step 4: Simplify right side
    85,654.56x = 4,247,347,459.62
  5. Step 5: Solve for x
    x = 4,247,347,459.62/85,654.56
  6. Step 6: Final answer
    x = 49,586.94

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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.