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Finding the Fourth Proportional to 280,027.80, 419,776.11 and 111,651.57

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Solution

The fourth proportional to 280,027.80, 419,776.11 and 111,651.57 is: 167,371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,027.80 : 419,776.11 = 111,651.57 : x
  2. Step 2: Convert to fraction form
    280,027.80/419,776.11 = 111,651.57/x
  3. Step 3: Cross multiply
    280,027.80x = 419,776.11 × 111,651.57
  4. Step 4: Simplify right side
    280,027.80x = 46,868,661,729.99
  5. Step 5: Solve for x
    x = 46,868,661,729.99/280,027.80
  6. Step 6: Final answer
    x = 167,371.46

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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.