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Finding the Fourth Proportional to 262.86, 361.95 and 207.42

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Solution

The fourth proportional to 262.86, 361.95 and 207.42 is: 285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.86 : 361.95 = 207.42 : x
  2. Step 2: Convert to fraction form
    262.86/361.95 = 207.42/x
  3. Step 3: Cross multiply
    262.86x = 361.95 × 207.42
  4. Step 4: Simplify right side
    262.86x = 75,075.67
  5. Step 5: Solve for x
    x = 75,075.67/262.86
  6. Step 6: Final answer
    x = 285.61

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