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Finding the Fourth Proportional to 18,394.05, 27,569.48 and 8,512.46

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Solution

The fourth proportional to 18,394.05, 27,569.48 and 8,512.46 is: 12,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,394.05 : 27,569.48 = 8,512.46 : x
  2. Step 2: Convert to fraction form
    18,394.05/27,569.48 = 8,512.46/x
  3. Step 3: Cross multiply
    18,394.05x = 27,569.48 × 8,512.46
  4. Step 4: Simplify right side
    18,394.05x = 234,683,915.31
  5. Step 5: Solve for x
    x = 234,683,915.31/18,394.05
  6. Step 6: Final answer
    x = 12,758.69

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1.5x scale

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.