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Finding the Fourth Proportional to 11,372.88, 17,055.88 and 3,975.96

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Solution

The fourth proportional to 11,372.88, 17,055.88 and 3,975.96 is: 5,962.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,372.88 : 17,055.88 = 3,975.96 : x
  2. Step 2: Convert to fraction form
    11,372.88/17,055.88 = 3,975.96/x
  3. Step 3: Cross multiply
    11,372.88x = 17,055.88 × 3,975.96
  4. Step 4: Simplify right side
    11,372.88x = 67,813,486.70
  5. Step 5: Solve for x
    x = 67,813,486.70/11,372.88
  6. Step 6: Final answer
    x = 5,962.74

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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.