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Finding the Fourth Proportional to 644,361.54, 966,171.93 and 265,543.77

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Solution

The fourth proportional to 644,361.54, 966,171.93 and 265,543.77 is: 398,163.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,361.54 : 966,171.93 = 265,543.77 : x
  2. Step 2: Convert to fraction form
    644,361.54/966,171.93 = 265,543.77/x
  3. Step 3: Cross multiply
    644,361.54x = 966,171.93 × 265,543.77
  4. Step 4: Simplify right side
    644,361.54x = 256,560,936,760.38
  5. Step 5: Solve for x
    x = 256,560,936,760.38/644,361.54
  6. Step 6: Final answer
    x = 398,163.02

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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.