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Finding the Fourth Proportional to 2,732.36, 3,772.08 and 1,685

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Solution

The fourth proportional to 2,732.36, 3,772.08 and 1,685 is: 2,326.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,732.36 : 3,772.08 = 1,685 : x
  2. Step 2: Convert to fraction form
    2,732.36/3,772.08 = 1,685/x
  3. Step 3: Cross multiply
    2,732.36x = 3,772.08 × 1,685
  4. Step 4: Simplify right side
    2,732.36x = 6,355,954.80
  5. Step 5: Solve for x
    x = 6,355,954.80/2,732.36
  6. Step 6: Final answer
    x = 2,326.18

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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.