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Finding the Fourth Proportional to 203,796.40, 305,694.60 and 164,430.40

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Solution

The fourth proportional to 203,796.40, 305,694.60 and 164,430.40 is: 246,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,796.40 : 305,694.60 = 164,430.40 : x
  2. Step 2: Convert to fraction form
    203,796.40/305,694.60 = 164,430.40/x
  3. Step 3: Cross multiply
    203,796.40x = 305,694.60 × 164,430.40
  4. Step 4: Simplify right side
    203,796.40x = 50,265,485,355.84
  5. Step 5: Solve for x
    x = 50,265,485,355.84/203,796.40
  6. Step 6: Final answer
    x = 246,645.60

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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.