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Finding the Fourth Proportional to 209,425.28, 289,181.28 and 194,229.44

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Solution

The fourth proportional to 209,425.28, 289,181.28 and 194,229.44 is: 268,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,425.28 : 289,181.28 = 194,229.44 : x
  2. Step 2: Convert to fraction form
    209,425.28/289,181.28 = 194,229.44/x
  3. Step 3: Cross multiply
    209,425.28x = 289,181.28 × 194,229.44
  4. Step 4: Simplify right side
    209,425.28x = 56,167,518,072.88
  5. Step 5: Solve for x
    x = 56,167,518,072.88/209,425.28
  6. Step 6: Final answer
    x = 268,198.37

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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.