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Finding the Fourth Proportional to 5,764.80, 8,635.05 and 4,792.80

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Solution

The fourth proportional to 5,764.80, 8,635.05 and 4,792.80 is: 7,179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,764.80 : 8,635.05 = 4,792.80 : x
  2. Step 2: Convert to fraction form
    5,764.80/8,635.05 = 4,792.80/x
  3. Step 3: Cross multiply
    5,764.80x = 8,635.05 × 4,792.80
  4. Step 4: Simplify right side
    5,764.80x = 41,386,067.64
  5. Step 5: Solve for x
    x = 41,386,067.64/5,764.80
  6. Step 6: Final answer
    x = 7,179.10

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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.