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Finding the Fourth Proportional to 5,821.76, 8,729.36 and 2,704.88

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Solution

The fourth proportional to 5,821.76, 8,729.36 and 2,704.88 is: 4,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.76 : 8,729.36 = 2,704.88 : x
  2. Step 2: Convert to fraction form
    5,821.76/8,729.36 = 2,704.88/x
  3. Step 3: Cross multiply
    5,821.76x = 8,729.36 × 2,704.88
  4. Step 4: Simplify right side
    5,821.76x = 23,611,871.28
  5. Step 5: Solve for x
    x = 23,611,871.28/5,821.76
  6. Step 6: Final answer
    x = 4,055.80

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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.