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Finding the Fourth Proportional to 10,687.55, 16,033.14 and 3,290.63

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Solution

The fourth proportional to 10,687.55, 16,033.14 and 3,290.63 is: 4,936.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.55 : 16,033.14 = 3,290.63 : x
  2. Step 2: Convert to fraction form
    10,687.55/16,033.14 = 3,290.63/x
  3. Step 3: Cross multiply
    10,687.55x = 16,033.14 × 3,290.63
  4. Step 4: Simplify right side
    10,687.55x = 52,759,131.48
  5. Step 5: Solve for x
    x = 52,759,131.48/10,687.55
  6. Step 6: Final answer
    x = 4,936.50

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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.