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Finding the Fourth Proportional to 3,564.88, 4,919.61 and 1,992.94

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Solution

The fourth proportional to 3,564.88, 4,919.61 and 1,992.94 is: 2,750.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,564.88 : 4,919.61 = 1,992.94 : x
  2. Step 2: Convert to fraction form
    3,564.88/4,919.61 = 1,992.94/x
  3. Step 3: Cross multiply
    3,564.88x = 4,919.61 × 1,992.94
  4. Step 4: Simplify right side
    3,564.88x = 9,804,487.55
  5. Step 5: Solve for x
    x = 9,804,487.55/3,564.88
  6. Step 6: Final answer
    x = 2,750.30

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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.