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Finding the Fourth Proportional to 203,954.91, 281,230.89 and 139,434.69

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Solution

The fourth proportional to 203,954.91, 281,230.89 and 139,434.69 is: 192,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,954.91 : 281,230.89 = 139,434.69 : x
  2. Step 2: Convert to fraction form
    203,954.91/281,230.89 = 139,434.69/x
  3. Step 3: Cross multiply
    203,954.91x = 281,230.89 × 139,434.69
  4. Step 4: Simplify right side
    203,954.91x = 39,213,341,706.35
  5. Step 5: Solve for x
    x = 39,213,341,706.35/203,954.91
  6. Step 6: Final answer
    x = 192,264.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.