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Finding the Fourth Proportional to 6,373.86, 8,791.25 and 3,721.11

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Solution

The fourth proportional to 6,373.86, 8,791.25 and 3,721.11 is: 5,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,373.86 : 8,791.25 = 3,721.11 : x
  2. Step 2: Convert to fraction form
    6,373.86/8,791.25 = 3,721.11/x
  3. Step 3: Cross multiply
    6,373.86x = 8,791.25 × 3,721.11
  4. Step 4: Simplify right side
    6,373.86x = 32,713,189.68
  5. Step 5: Solve for x
    x = 32,713,189.68/6,373.86
  6. Step 6: Final answer
    x = 5,132.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.