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Finding the Fourth Proportional to 3,320.72, 4,981.08 and 2,168.72

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Solution

The fourth proportional to 3,320.72, 4,981.08 and 2,168.72 is: 3,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.72 : 4,981.08 = 2,168.72 : x
  2. Step 2: Convert to fraction form
    3,320.72/4,981.08 = 2,168.72/x
  3. Step 3: Cross multiply
    3,320.72x = 4,981.08 × 2,168.72
  4. Step 4: Simplify right side
    3,320.72x = 10,802,567.82
  5. Step 5: Solve for x
    x = 10,802,567.82/3,320.72
  6. Step 6: Final answer
    x = 3,253.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.