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Finding the Fourth Proportional to 11,711.75, 17,570.06 and 4,786.25

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Solution

The fourth proportional to 11,711.75, 17,570.06 and 4,786.25 is: 7,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,711.75 : 17,570.06 = 4,786.25 : x
  2. Step 2: Convert to fraction form
    11,711.75/17,570.06 = 4,786.25/x
  3. Step 3: Cross multiply
    11,711.75x = 17,570.06 × 4,786.25
  4. Step 4: Simplify right side
    11,711.75x = 84,094,675.74
  5. Step 5: Solve for x
    x = 84,094,675.74/11,711.75
  6. Step 6: Final answer
    x = 7,180.37

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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.