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Finding the Fourth Proportional to 18,793.16, 25,906.96 and 14,309.12

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Solution

The fourth proportional to 18,793.16, 25,906.96 and 14,309.12 is: 19,725.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.16 : 25,906.96 = 14,309.12 : x
  2. Step 2: Convert to fraction form
    18,793.16/25,906.96 = 14,309.12/x
  3. Step 3: Cross multiply
    18,793.16x = 25,906.96 × 14,309.12
  4. Step 4: Simplify right side
    18,793.16x = 370,705,799.48
  5. Step 5: Solve for x
    x = 370,705,799.48/18,793.16
  6. Step 6: Final answer
    x = 19,725.57

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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.