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Finding the Fourth Proportional to 4,805.86, 7,208.80 and 3,711.82

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Solution

The fourth proportional to 4,805.86, 7,208.80 and 3,711.82 is: 5,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,805.86 : 7,208.80 = 3,711.82 : x
  2. Step 2: Convert to fraction form
    4,805.86/7,208.80 = 3,711.82/x
  3. Step 3: Cross multiply
    4,805.86x = 7,208.80 × 3,711.82
  4. Step 4: Simplify right side
    4,805.86x = 26,757,768.02
  5. Step 5: Solve for x
    x = 26,757,768.02/4,805.86
  6. Step 6: Final answer
    x = 5,567.74

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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.