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Finding the Fourth Proportional to 309,861.40, 427,692.56 and 182,576.92

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Solution

The fourth proportional to 309,861.40, 427,692.56 and 182,576.92 is: 252,005.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,861.40 : 427,692.56 = 182,576.92 : x
  2. Step 2: Convert to fraction form
    309,861.40/427,692.56 = 182,576.92/x
  3. Step 3: Cross multiply
    309,861.40x = 427,692.56 × 182,576.92
  4. Step 4: Simplify right side
    309,861.40x = 78,086,790,311.72
  5. Step 5: Solve for x
    x = 78,086,790,311.72/309,861.40
  6. Step 6: Final answer
    x = 252,005.54

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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.