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Finding the Fourth Proportional to 257,344.56, 385,998.24 and 79,847.04

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Solution

The fourth proportional to 257,344.56, 385,998.24 and 79,847.04 is: 119,764.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,344.56 : 385,998.24 = 79,847.04 : x
  2. Step 2: Convert to fraction form
    257,344.56/385,998.24 = 79,847.04/x
  3. Step 3: Cross multiply
    257,344.56x = 385,998.24 × 79,847.04
  4. Step 4: Simplify right side
    257,344.56x = 30,820,816,909.21
  5. Step 5: Solve for x
    x = 30,820,816,909.21/257,344.56
  6. Step 6: Final answer
    x = 119,764.79

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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.