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Finding the Fourth Proportional to 203,933.77, 305,944.43 and 85,536.88

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Solution

The fourth proportional to 203,933.77, 305,944.43 and 85,536.88 is: 128,323.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,933.77 : 305,944.43 = 85,536.88 : x
  2. Step 2: Convert to fraction form
    203,933.77/305,944.43 = 85,536.88/x
  3. Step 3: Cross multiply
    203,933.77x = 305,944.43 × 85,536.88
  4. Step 4: Simplify right side
    203,933.77x = 26,169,530,803.03
  5. Step 5: Solve for x
    x = 26,169,530,803.03/203,933.77
  6. Step 6: Final answer
    x = 128,323.68

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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.