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Finding the Fourth Proportional to 644,361.54, 966,171.92 and 265,543.80

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Solution

The fourth proportional to 644,361.54, 966,171.92 and 265,543.80 is: 398,163.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,361.54 : 966,171.92 = 265,543.80 : x
  2. Step 2: Convert to fraction form
    644,361.54/966,171.92 = 265,543.80/x
  3. Step 3: Cross multiply
    644,361.54x = 966,171.92 × 265,543.80
  4. Step 4: Simplify right side
    644,361.54x = 256,560,961,762.38
  5. Step 5: Solve for x
    x = 256,560,961,762.38/644,361.54
  6. Step 6: Final answer
    x = 398,163.06

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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.