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Finding the Fourth Proportional to 325,900.80, 488,851.20 and 273,412.80

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Solution

The fourth proportional to 325,900.80, 488,851.20 and 273,412.80 is: 410,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,900.80 : 488,851.20 = 273,412.80 : x
  2. Step 2: Convert to fraction form
    325,900.80/488,851.20 = 273,412.80/x
  3. Step 3: Cross multiply
    325,900.80x = 488,851.20 × 273,412.80
  4. Step 4: Simplify right side
    325,900.80x = 133,658,175,375.36
  5. Step 5: Solve for x
    x = 133,658,175,375.36/325,900.80
  6. Step 6: Final answer
    x = 410,119.20

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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.