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Finding the Fourth Proportional to 3,651.64, 5,479.30 and 1,461

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Solution

The fourth proportional to 3,651.64, 5,479.30 and 1,461 is: 2,192.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.64 : 5,479.30 = 1,461 : x
  2. Step 2: Convert to fraction form
    3,651.64/5,479.30 = 1,461/x
  3. Step 3: Cross multiply
    3,651.64x = 5,479.30 × 1,461
  4. Step 4: Simplify right side
    3,651.64x = 8,005,257.30
  5. Step 5: Solve for x
    x = 8,005,257.30/3,651.64
  6. Step 6: Final answer
    x = 2,192.24

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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.