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Finding the Fourth Proportional to 405,716.80, 608,575.20 and 169,229.20

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Solution

The fourth proportional to 405,716.80, 608,575.20 and 169,229.20 is: 253,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,716.80 : 608,575.20 = 169,229.20 : x
  2. Step 2: Convert to fraction form
    405,716.80/608,575.20 = 169,229.20/x
  3. Step 3: Cross multiply
    405,716.80x = 608,575.20 × 169,229.20
  4. Step 4: Simplify right side
    405,716.80x = 102,988,694,235.84
  5. Step 5: Solve for x
    x = 102,988,694,235.84/405,716.80
  6. Step 6: Final answer
    x = 253,843.80

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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.