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Finding the Fourth Proportional to 13,371.98, 20,061.21 and 4,011.98

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Solution

The fourth proportional to 13,371.98, 20,061.21 and 4,011.98 is: 6,018.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.98 : 20,061.21 = 4,011.98 : x
  2. Step 2: Convert to fraction form
    13,371.98/20,061.21 = 4,011.98/x
  3. Step 3: Cross multiply
    13,371.98x = 20,061.21 × 4,011.98
  4. Step 4: Simplify right side
    13,371.98x = 80,485,173.30
  5. Step 5: Solve for x
    x = 80,485,173.30/13,371.98
  6. Step 6: Final answer
    x = 6,018.94

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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.