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Finding the Fourth Proportional to 311,040.80, 466,561.20 and 248,832.80

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Solution

The fourth proportional to 311,040.80, 466,561.20 and 248,832.80 is: 373,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,040.80 : 466,561.20 = 248,832.80 : x
  2. Step 2: Convert to fraction form
    311,040.80/466,561.20 = 248,832.80/x
  3. Step 3: Cross multiply
    311,040.80x = 466,561.20 × 248,832.80
  4. Step 4: Simplify right side
    311,040.80x = 116,095,729,767.36
  5. Step 5: Solve for x
    x = 116,095,729,767.36/311,040.80
  6. Step 6: Final answer
    x = 373,249.20

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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.