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Finding the Fourth Proportional to 256,195.80, 383,418.90 and 235,200.60

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Solution

The fourth proportional to 256,195.80, 383,418.90 and 235,200.60 is: 351,997.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,195.80 : 383,418.90 = 235,200.60 : x
  2. Step 2: Convert to fraction form
    256,195.80/383,418.90 = 235,200.60/x
  3. Step 3: Cross multiply
    256,195.80x = 383,418.90 × 235,200.60
  4. Step 4: Simplify right side
    256,195.80x = 90,180,355,331.34
  5. Step 5: Solve for x
    x = 90,180,355,331.34/256,195.80
  6. Step 6: Final answer
    x = 351,997.79

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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.