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Finding the Fourth Proportional to 299,863.60, 449,576.70 and 122,279.20

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Solution

The fourth proportional to 299,863.60, 449,576.70 and 122,279.20 is: 183,329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,863.60 : 449,576.70 = 122,279.20 : x
  2. Step 2: Convert to fraction form
    299,863.60/449,576.70 = 122,279.20/x
  3. Step 3: Cross multiply
    299,863.60x = 449,576.70 × 122,279.20
  4. Step 4: Simplify right side
    299,863.60x = 54,973,879,214.64
  5. Step 5: Solve for x
    x = 54,973,879,214.64/299,863.60
  6. Step 6: Final answer
    x = 183,329.62

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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.