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Finding the Fourth Proportional to 3,562.62, 5,343.94 and 965.76

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Solution

The fourth proportional to 3,562.62, 5,343.94 and 965.76 is: 1,448.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,562.62 : 5,343.94 = 965.76 : x
  2. Step 2: Convert to fraction form
    3,562.62/5,343.94 = 965.76/x
  3. Step 3: Cross multiply
    3,562.62x = 5,343.94 × 965.76
  4. Step 4: Simplify right side
    3,562.62x = 5,160,963.49
  5. Step 5: Solve for x
    x = 5,160,963.49/3,562.62
  6. Step 6: Final answer
    x = 1,448.64

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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.