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Finding the Fourth Proportional to 336,422.80, 504,634.20 and 136,676.80

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Solution

The fourth proportional to 336,422.80, 504,634.20 and 136,676.80 is: 205,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,422.80 : 504,634.20 = 136,676.80 : x
  2. Step 2: Convert to fraction form
    336,422.80/504,634.20 = 136,676.80/x
  3. Step 3: Cross multiply
    336,422.80x = 504,634.20 × 136,676.80
  4. Step 4: Simplify right side
    336,422.80x = 68,971,787,626.56
  5. Step 5: Solve for x
    x = 68,971,787,626.56/336,422.80
  6. Step 6: Final answer
    x = 205,015.20

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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.