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Finding the Fourth Proportional to 3,585.88, 5,376.31 and 1,831.42

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Solution

The fourth proportional to 3,585.88, 5,376.31 and 1,831.42 is: 2,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,585.88 : 5,376.31 = 1,831.42 : x
  2. Step 2: Convert to fraction form
    3,585.88/5,376.31 = 1,831.42/x
  3. Step 3: Cross multiply
    3,585.88x = 5,376.31 × 1,831.42
  4. Step 4: Simplify right side
    3,585.88x = 9,846,281.66
  5. Step 5: Solve for x
    x = 9,846,281.66/3,585.88
  6. Step 6: Final answer
    x = 2,745.85

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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.