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Finding the Fourth Proportional to 3,859.29, 5,784.30 and 1,776.44

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Solution

The fourth proportional to 3,859.29, 5,784.30 and 1,776.44 is: 2,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.29 : 5,784.30 = 1,776.44 : x
  2. Step 2: Convert to fraction form
    3,859.29/5,784.30 = 1,776.44/x
  3. Step 3: Cross multiply
    3,859.29x = 5,784.30 × 1,776.44
  4. Step 4: Simplify right side
    3,859.29x = 10,275,432.97
  5. Step 5: Solve for x
    x = 10,275,432.97/3,859.29
  6. Step 6: Final answer
    x = 2,662.52

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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.