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Finding the Fourth Proportional to 18,921.92, 26,092.46 and 14,134.37

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Solution

The fourth proportional to 18,921.92, 26,092.46 and 14,134.37 is: 19,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.92 : 26,092.46 = 14,134.37 : x
  2. Step 2: Convert to fraction form
    18,921.92/26,092.46 = 14,134.37/x
  3. Step 3: Cross multiply
    18,921.92x = 26,092.46 × 14,134.37
  4. Step 4: Simplify right side
    18,921.92x = 368,800,282.72
  5. Step 5: Solve for x
    x = 368,800,282.72/18,921.92
  6. Step 6: Final answer
    x = 19,490.64

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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.