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Finding the Fourth Proportional to 181,561.20, 250,550.85 and 100,986.99

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Solution

The fourth proportional to 181,561.20, 250,550.85 and 100,986.99 is: 139,360.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,561.20 : 250,550.85 = 100,986.99 : x
  2. Step 2: Convert to fraction form
    181,561.20/250,550.85 = 100,986.99/x
  3. Step 3: Cross multiply
    181,561.20x = 250,550.85 × 100,986.99
  4. Step 4: Simplify right side
    181,561.20x = 25,302,376,183.44
  5. Step 5: Solve for x
    x = 25,302,376,183.44/181,561.20
  6. Step 6: Final answer
    x = 139,360.04

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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.