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Finding the Fourth Proportional to 209,651.56, 313,998.26 and 164,570.30

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Solution

The fourth proportional to 209,651.56, 313,998.26 and 164,570.30 is: 246,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,651.56 : 313,998.26 = 164,570.30 : x
  2. Step 2: Convert to fraction form
    209,651.56/313,998.26 = 164,570.30/x
  3. Step 3: Cross multiply
    209,651.56x = 313,998.26 × 164,570.30
  4. Step 4: Simplify right side
    209,651.56x = 51,674,787,847.68
  5. Step 5: Solve for x
    x = 51,674,787,847.68/209,651.56
  6. Step 6: Final answer
    x = 246,479.39

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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.