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Finding the Fourth Proportional to 13,468.18, 20,201.88 and 3,607.44

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Solution

The fourth proportional to 13,468.18, 20,201.88 and 3,607.44 is: 5,411.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,468.18 : 20,201.88 = 3,607.44 : x
  2. Step 2: Convert to fraction form
    13,468.18/20,201.88 = 3,607.44/x
  3. Step 3: Cross multiply
    13,468.18x = 20,201.88 × 3,607.44
  4. Step 4: Simplify right side
    13,468.18x = 72,877,069.99
  5. Step 5: Solve for x
    x = 72,877,069.99/13,468.18
  6. Step 6: Final answer
    x = 5,411.06

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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.