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Finding the Fourth Proportional to 259,489.20, 389,233.80 and 196,503.60

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Solution

The fourth proportional to 259,489.20, 389,233.80 and 196,503.60 is: 294,755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,489.20 : 389,233.80 = 196,503.60 : x
  2. Step 2: Convert to fraction form
    259,489.20/389,233.80 = 196,503.60/x
  3. Step 3: Cross multiply
    259,489.20x = 389,233.80 × 196,503.60
  4. Step 4: Simplify right side
    259,489.20x = 76,485,842,941.68
  5. Step 5: Solve for x
    x = 76,485,842,941.68/259,489.20
  6. Step 6: Final answer
    x = 294,755.40

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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.