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Finding the Fourth Proportional to 8,940.35, 12,337.64 and 4,961.45

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Solution

The fourth proportional to 8,940.35, 12,337.64 and 4,961.45 is: 6,846.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,940.35 : 12,337.64 = 4,961.45 : x
  2. Step 2: Convert to fraction form
    8,940.35/12,337.64 = 4,961.45/x
  3. Step 3: Cross multiply
    8,940.35x = 12,337.64 × 4,961.45
  4. Step 4: Simplify right side
    8,940.35x = 61,212,583.98
  5. Step 5: Solve for x
    x = 61,212,583.98/8,940.35
  6. Step 6: Final answer
    x = 6,846.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.