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Finding the Fourth Proportional to 3,971.04, 5,479.92 and 2,292.72

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Solution

The fourth proportional to 3,971.04, 5,479.92 and 2,292.72 is: 3,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.04 : 5,479.92 = 2,292.72 : x
  2. Step 2: Convert to fraction form
    3,971.04/5,479.92 = 2,292.72/x
  3. Step 3: Cross multiply
    3,971.04x = 5,479.92 × 2,292.72
  4. Step 4: Simplify right side
    3,971.04x = 12,563,922.18
  5. Step 5: Solve for x
    x = 12,563,922.18/3,971.04
  6. Step 6: Final answer
    x = 3,163.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.