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Finding the Fourth Proportional to 203,794.71, 305,593.74 and 85,434.27

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Solution

The fourth proportional to 203,794.71, 305,593.74 and 85,434.27 is: 128,110.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,794.71 : 305,593.74 = 85,434.27 : x
  2. Step 2: Convert to fraction form
    203,794.71/305,593.74 = 85,434.27/x
  3. Step 3: Cross multiply
    203,794.71x = 305,593.74 × 85,434.27
  4. Step 4: Simplify right side
    203,794.71x = 26,108,178,093.47
  5. Step 5: Solve for x
    x = 26,108,178,093.47/203,794.71
  6. Step 6: Final answer
    x = 128,110.19

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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.