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Finding the Fourth Proportional to 416,221.80, 622,950.30 and 291,805.80

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Solution

The fourth proportional to 416,221.80, 622,950.30 and 291,805.80 is: 436,739.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,221.80 : 622,950.30 = 291,805.80 : x
  2. Step 2: Convert to fraction form
    416,221.80/622,950.30 = 291,805.80/x
  3. Step 3: Cross multiply
    416,221.80x = 622,950.30 × 291,805.80
  4. Step 4: Simplify right side
    416,221.80x = 181,780,510,651.74
  5. Step 5: Solve for x
    x = 181,780,510,651.74/416,221.80
  6. Step 6: Final answer
    x = 436,739.52

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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.