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Finding the Fourth Proportional to 439,441.80, 605,992.92 and 330,806.16

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Solution

The fourth proportional to 439,441.80, 605,992.92 and 330,806.16 is: 456,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,441.80 : 605,992.92 = 330,806.16 : x
  2. Step 2: Convert to fraction form
    439,441.80/605,992.92 = 330,806.16/x
  3. Step 3: Cross multiply
    439,441.80x = 605,992.92 × 330,806.16
  4. Step 4: Simplify right side
    439,441.80x = 200,466,190,852.39
  5. Step 5: Solve for x
    x = 200,466,190,852.39/439,441.80
  6. Step 6: Final answer
    x = 456,183.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.