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Finding the Fourth Proportional to 5,784.74, 8,676.00 and 2,820.20

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Solution

The fourth proportional to 5,784.74, 8,676.00 and 2,820.20 is: 4,229.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,784.74 : 8,676.00 = 2,820.20 : x
  2. Step 2: Convert to fraction form
    5,784.74/8,676.00 = 2,820.20/x
  3. Step 3: Cross multiply
    5,784.74x = 8,676.00 × 2,820.20
  4. Step 4: Simplify right side
    5,784.74x = 24,468,092.96
  5. Step 5: Solve for x
    x = 24,468,092.96/5,784.74
  6. Step 6: Final answer
    x = 4,229.77

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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.