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Finding the Fourth Proportional to 330,672.80, 496,268.40 and 153,201.80

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Solution

The fourth proportional to 330,672.80, 496,268.40 and 153,201.80 is: 229,922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,672.80 : 496,268.40 = 153,201.80 : x
  2. Step 2: Convert to fraction form
    330,672.80/496,268.40 = 153,201.80/x
  3. Step 3: Cross multiply
    330,672.80x = 496,268.40 × 153,201.80
  4. Step 4: Simplify right side
    330,672.80x = 76,029,212,163.12
  5. Step 5: Solve for x
    x = 76,029,212,163.12/330,672.80
  6. Step 6: Final answer
    x = 229,922.79

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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.