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Finding the Fourth Proportional to 5,787,408.80, 8,678,655.60 and 2,796,509.60

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Solution

The fourth proportional to 5,787,408.80, 8,678,655.60 and 2,796,509.60 is: 4,193,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787,408.80 : 8,678,655.60 = 2,796,509.60 : x
  2. Step 2: Convert to fraction form
    5,787,408.80/8,678,655.60 = 2,796,509.60/x
  3. Step 3: Cross multiply
    5,787,408.80x = 8,678,655.60 × 2,796,509.60
  4. Step 4: Simplify right side
    5,787,408.80x = 24,269,943,700,493.76
  5. Step 5: Solve for x
    x = 24,269,943,700,493.76/5,787,408.80
  6. Step 6: Final answer
    x = 4,193,576.87

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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.