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Finding the Fourth Proportional to 419,273.70, 578,604.72 and 237,991.22

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Solution

The fourth proportional to 419,273.70, 578,604.72 and 237,991.22 is: 328,431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,273.70 : 578,604.72 = 237,991.22 : x
  2. Step 2: Convert to fraction form
    419,273.70/578,604.72 = 237,991.22/x
  3. Step 3: Cross multiply
    419,273.70x = 578,604.72 × 237,991.22
  4. Step 4: Simplify right side
    419,273.70x = 137,702,843,210.56
  5. Step 5: Solve for x
    x = 137,702,843,210.56/419,273.70
  6. Step 6: Final answer
    x = 328,431.86

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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.