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Finding the Fourth Proportional to 203,936.80, 305,905.20 and 174,412.30

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Solution

The fourth proportional to 203,936.80, 305,905.20 and 174,412.30 is: 261,618.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,936.80 : 305,905.20 = 174,412.30 : x
  2. Step 2: Convert to fraction form
    203,936.80/305,905.20 = 174,412.30/x
  3. Step 3: Cross multiply
    203,936.80x = 305,905.20 × 174,412.30
  4. Step 4: Simplify right side
    203,936.80x = 53,353,629,513.96
  5. Step 5: Solve for x
    x = 53,353,629,513.96/203,936.80
  6. Step 6: Final answer
    x = 261,618.45

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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.