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Finding the Fourth Proportional to 11,804.81, 17,707.79 and 3,908.05

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Solution

The fourth proportional to 11,804.81, 17,707.79 and 3,908.05 is: 5,862.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,804.81 : 17,707.79 = 3,908.05 : x
  2. Step 2: Convert to fraction form
    11,804.81/17,707.79 = 3,908.05/x
  3. Step 3: Cross multiply
    11,804.81x = 17,707.79 × 3,908.05
  4. Step 4: Simplify right side
    11,804.81x = 69,202,883.22
  5. Step 5: Solve for x
    x = 69,202,883.22/11,804.81
  6. Step 6: Final answer
    x = 5,862.26

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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.