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Finding the Fourth Proportional to 14,961.60, 22,420.80 and 6,634.80

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Solution

The fourth proportional to 14,961.60, 22,420.80 and 6,634.80 is: 9,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,961.60 : 22,420.80 = 6,634.80 : x
  2. Step 2: Convert to fraction form
    14,961.60/22,420.80 = 6,634.80/x
  3. Step 3: Cross multiply
    14,961.60x = 22,420.80 × 6,634.80
  4. Step 4: Simplify right side
    14,961.60x = 148,757,523.84
  5. Step 5: Solve for x
    x = 148,757,523.84/14,961.60
  6. Step 6: Final answer
    x = 9,942.62

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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.