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Finding the Fourth Proportional to 4,789.62, 7,173.90 and 3,862.98

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Solution

The fourth proportional to 4,789.62, 7,173.90 and 3,862.98 is: 5,785.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.62 : 7,173.90 = 3,862.98 : x
  2. Step 2: Convert to fraction form
    4,789.62/7,173.90 = 3,862.98/x
  3. Step 3: Cross multiply
    4,789.62x = 7,173.90 × 3,862.98
  4. Step 4: Simplify right side
    4,789.62x = 27,712,632.22
  5. Step 5: Solve for x
    x = 27,712,632.22/4,789.62
  6. Step 6: Final answer
    x = 5,785.98

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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.