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Finding the Fourth Proportional to 18,601.70, 27,889.16 and 8,735.49

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Solution

The fourth proportional to 18,601.70, 27,889.16 and 8,735.49 is: 13,096.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.70 : 27,889.16 = 8,735.49 : x
  2. Step 2: Convert to fraction form
    18,601.70/27,889.16 = 8,735.49/x
  3. Step 3: Cross multiply
    18,601.70x = 27,889.16 × 8,735.49
  4. Step 4: Simplify right side
    18,601.70x = 243,625,434.61
  5. Step 5: Solve for x
    x = 243,625,434.61/18,601.70
  6. Step 6: Final answer
    x = 13,096.95

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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.