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Finding the Fourth Proportional to 208,122.20, 311,261.70 and 174,944.60

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Solution

The fourth proportional to 208,122.20, 311,261.70 and 174,944.60 is: 261,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,122.20 : 311,261.70 = 174,944.60 : x
  2. Step 2: Convert to fraction form
    208,122.20/311,261.70 = 174,944.60/x
  3. Step 3: Cross multiply
    208,122.20x = 311,261.70 × 174,944.60
  4. Step 4: Simplify right side
    208,122.20x = 54,453,553,601.82
  5. Step 5: Solve for x
    x = 54,453,553,601.82/208,122.20
  6. Step 6: Final answer
    x = 261,642.22

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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.