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Finding the Fourth Proportional to 11,655.80, 17,481.21 and 3,759.02

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Solution

The fourth proportional to 11,655.80, 17,481.21 and 3,759.02 is: 5,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,655.80 : 17,481.21 = 3,759.02 : x
  2. Step 2: Convert to fraction form
    11,655.80/17,481.21 = 3,759.02/x
  3. Step 3: Cross multiply
    11,655.80x = 17,481.21 × 3,759.02
  4. Step 4: Simplify right side
    11,655.80x = 65,712,130.61
  5. Step 5: Solve for x
    x = 65,712,130.61/11,655.80
  6. Step 6: Final answer
    x = 5,637.72

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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.