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Finding the Fourth Proportional to 436,912.20, 654,056.10 and 259,327.80

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Solution

The fourth proportional to 436,912.20, 654,056.10 and 259,327.80 is: 388,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,912.20 : 654,056.10 = 259,327.80 : x
  2. Step 2: Convert to fraction form
    436,912.20/654,056.10 = 259,327.80/x
  3. Step 3: Cross multiply
    436,912.20x = 654,056.10 × 259,327.80
  4. Step 4: Simplify right side
    436,912.20x = 169,614,929,489.58
  5. Step 5: Solve for x
    x = 169,614,929,489.58/436,912.20
  6. Step 6: Final answer
    x = 388,212.85

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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.