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Finding the Fourth Proportional to 4,922.88, 7,382.40 and 2,455.68

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Solution

The fourth proportional to 4,922.88, 7,382.40 and 2,455.68 is: 3,682.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,922.88 : 7,382.40 = 2,455.68 : x
  2. Step 2: Convert to fraction form
    4,922.88/7,382.40 = 2,455.68/x
  3. Step 3: Cross multiply
    4,922.88x = 7,382.40 × 2,455.68
  4. Step 4: Simplify right side
    4,922.88x = 18,128,812.03
  5. Step 5: Solve for x
    x = 18,128,812.03/4,922.88
  6. Step 6: Final answer
    x = 3,682.56

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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.