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Finding the Fourth Proportional to 21,586.80, 32,380.16 and 6,796.96

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Solution

The fourth proportional to 21,586.80, 32,380.16 and 6,796.96 is: 10,195.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,586.80 : 32,380.16 = 6,796.96 : x
  2. Step 2: Convert to fraction form
    21,586.80/32,380.16 = 6,796.96/x
  3. Step 3: Cross multiply
    21,586.80x = 32,380.16 × 6,796.96
  4. Step 4: Simplify right side
    21,586.80x = 220,086,652.31
  5. Step 5: Solve for x
    x = 220,086,652.31/21,586.80
  6. Step 6: Final answer
    x = 10,195.43

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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.