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Finding the Fourth Proportional to 18,365.46, 25,339.91 and 11,648.64

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Solution

The fourth proportional to 18,365.46, 25,339.91 and 11,648.64 is: 16,072.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,365.46 : 25,339.91 = 11,648.64 : x
  2. Step 2: Convert to fraction form
    18,365.46/25,339.91 = 11,648.64/x
  3. Step 3: Cross multiply
    18,365.46x = 25,339.91 × 11,648.64
  4. Step 4: Simplify right side
    18,365.46x = 295,175,517.39
  5. Step 5: Solve for x
    x = 295,175,517.39/18,365.46
  6. Step 6: Final answer
    x = 16,072.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.