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Finding the Fourth Proportional to 5,811.56, 8,716.56 and 1,651.92

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Solution

The fourth proportional to 5,811.56, 8,716.56 and 1,651.92 is: 2,477.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.56 : 8,716.56 = 1,651.92 : x
  2. Step 2: Convert to fraction form
    5,811.56/8,716.56 = 1,651.92/x
  3. Step 3: Cross multiply
    5,811.56x = 8,716.56 × 1,651.92
  4. Step 4: Simplify right side
    5,811.56x = 14,399,059.80
  5. Step 5: Solve for x
    x = 14,399,059.80/5,811.56
  6. Step 6: Final answer
    x = 2,477.66

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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.