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Finding the Fourth Proportional to 2,673.91, 4,011.63 and 825.28

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Solution

The fourth proportional to 2,673.91, 4,011.63 and 825.28 is: 1,238.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.91 : 4,011.63 = 825.28 : x
  2. Step 2: Convert to fraction form
    2,673.91/4,011.63 = 825.28/x
  3. Step 3: Cross multiply
    2,673.91x = 4,011.63 × 825.28
  4. Step 4: Simplify right side
    2,673.91x = 3,310,718.01
  5. Step 5: Solve for x
    x = 3,310,718.01/2,673.91
  6. Step 6: Final answer
    x = 1,238.16

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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.