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Finding the Fourth Proportional to 603,219.78, 904,829.16 and 153,940.73

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Solution

The fourth proportional to 603,219.78, 904,829.16 and 153,940.73 is: 230,910.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,219.78 : 904,829.16 = 153,940.73 : x
  2. Step 2: Convert to fraction form
    603,219.78/904,829.16 = 153,940.73/x
  3. Step 3: Cross multiply
    603,219.78x = 904,829.16 × 153,940.73
  4. Step 4: Simplify right side
    603,219.78x = 139,290,056,891.54
  5. Step 5: Solve for x
    x = 139,290,056,891.54/603,219.78
  6. Step 6: Final answer
    x = 230,910.96

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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.