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Finding the Fourth Proportional to 13,994.44, 20,991.66 and 4,760.44

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Solution

The fourth proportional to 13,994.44, 20,991.66 and 4,760.44 is: 7,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.44 : 20,991.66 = 4,760.44 : x
  2. Step 2: Convert to fraction form
    13,994.44/20,991.66 = 4,760.44/x
  3. Step 3: Cross multiply
    13,994.44x = 20,991.66 × 4,760.44
  4. Step 4: Simplify right side
    13,994.44x = 99,929,467.60
  5. Step 5: Solve for x
    x = 99,929,467.60/13,994.44
  6. Step 6: Final answer
    x = 7,140.66

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1.5x scale

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.