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Finding the Fourth Proportional to 12,325.42, 18,489.14 and 3,560.41

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Solution

The fourth proportional to 12,325.42, 18,489.14 and 3,560.41 is: 5,340.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.42 : 18,489.14 = 3,560.41 : x
  2. Step 2: Convert to fraction form
    12,325.42/18,489.14 = 3,560.41/x
  3. Step 3: Cross multiply
    12,325.42x = 18,489.14 × 3,560.41
  4. Step 4: Simplify right side
    12,325.42x = 65,828,808.70
  5. Step 5: Solve for x
    x = 65,828,808.70/12,325.42
  6. Step 6: Final answer
    x = 5,340.90

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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.