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Finding the Fourth Proportional to 311,108.80, 467,008.80 and 192,913.60

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Solution

The fourth proportional to 311,108.80, 467,008.80 and 192,913.60 is: 289,584.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,108.80 : 467,008.80 = 192,913.60 : x
  2. Step 2: Convert to fraction form
    311,108.80/467,008.80 = 192,913.60/x
  3. Step 3: Cross multiply
    311,108.80x = 467,008.80 × 192,913.60
  4. Step 4: Simplify right side
    311,108.80x = 90,092,348,839.68
  5. Step 5: Solve for x
    x = 90,092,348,839.68/311,108.80
  6. Step 6: Final answer
    x = 289,584.70

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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.