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Finding the Fourth Proportional to 299,568.15, 449,491.16 and 131,066.28

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Solution

The fourth proportional to 299,568.15, 449,491.16 and 131,066.28 is: 196,660.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,568.15 : 449,491.16 = 131,066.28 : x
  2. Step 2: Convert to fraction form
    299,568.15/449,491.16 = 131,066.28/x
  3. Step 3: Cross multiply
    299,568.15x = 449,491.16 × 131,066.28
  4. Step 4: Simplify right side
    299,568.15x = 58,913,133,578.75
  5. Step 5: Solve for x
    x = 58,913,133,578.75/299,568.15
  6. Step 6: Final answer
    x = 196,660.20

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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.