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Finding the Fourth Proportional to 12,258.36, 18,388.15 and 3,494.57

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Solution

The fourth proportional to 12,258.36, 18,388.15 and 3,494.57 is: 5,242.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.36 : 18,388.15 = 3,494.57 : x
  2. Step 2: Convert to fraction form
    12,258.36/18,388.15 = 3,494.57/x
  3. Step 3: Cross multiply
    12,258.36x = 18,388.15 × 3,494.57
  4. Step 4: Simplify right side
    12,258.36x = 64,258,576.67
  5. Step 5: Solve for x
    x = 64,258,576.67/12,258.36
  6. Step 6: Final answer
    x = 5,242.02

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.