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Finding the Fourth Proportional to 481,385.72, 664,322.42 and 263,603.54

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Solution

The fourth proportional to 481,385.72, 664,322.42 and 263,603.54 is: 363,778.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,385.72 : 664,322.42 = 263,603.54 : x
  2. Step 2: Convert to fraction form
    481,385.72/664,322.42 = 263,603.54/x
  3. Step 3: Cross multiply
    481,385.72x = 664,322.42 × 263,603.54
  4. Step 4: Simplify right side
    481,385.72x = 175,117,738,950.76
  5. Step 5: Solve for x
    x = 175,117,738,950.76/481,385.72
  6. Step 6: Final answer
    x = 363,778.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.