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Finding the Fourth Proportional to 2,699.88, 4,043.26 and 2,485.96

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Solution

The fourth proportional to 2,699.88, 4,043.26 and 2,485.96 is: 3,722.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.88 : 4,043.26 = 2,485.96 : x
  2. Step 2: Convert to fraction form
    2,699.88/4,043.26 = 2,485.96/x
  3. Step 3: Cross multiply
    2,699.88x = 4,043.26 × 2,485.96
  4. Step 4: Simplify right side
    2,699.88x = 10,051,382.63
  5. Step 5: Solve for x
    x = 10,051,382.63/2,699.88
  6. Step 6: Final answer
    x = 3,722.90

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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.