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Finding the Fourth Proportional to 397,369.53, 548,353.26 and 225,299.07

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Solution

The fourth proportional to 397,369.53, 548,353.26 and 225,299.07 is: 310,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,369.53 : 548,353.26 = 225,299.07 : x
  2. Step 2: Convert to fraction form
    397,369.53/548,353.26 = 225,299.07/x
  3. Step 3: Cross multiply
    397,369.53x = 548,353.26 × 225,299.07
  4. Step 4: Simplify right side
    397,369.53x = 123,543,479,509.47
  5. Step 5: Solve for x
    x = 123,543,479,509.47/397,369.53
  6. Step 6: Final answer
    x = 310,903.25

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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.