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Finding the Fourth Proportional to 311,604.78, 429,800.52 and 190,805.85

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Solution

The fourth proportional to 311,604.78, 429,800.52 and 190,805.85 is: 263,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,604.78 : 429,800.52 = 190,805.85 : x
  2. Step 2: Convert to fraction form
    311,604.78/429,800.52 = 190,805.85/x
  3. Step 3: Cross multiply
    311,604.78x = 429,800.52 × 190,805.85
  4. Step 4: Simplify right side
    311,604.78x = 82,008,453,549.04
  5. Step 5: Solve for x
    x = 82,008,453,549.04/311,604.78
  6. Step 6: Final answer
    x = 263,180.99

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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.