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Finding the Fourth Proportional to 18,793.72, 25,908.54 and 13,486.84

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Solution

The fourth proportional to 18,793.72, 25,908.54 and 13,486.84 is: 18,592.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,793.72 : 25,908.54 = 13,486.84 : x
  2. Step 2: Convert to fraction form
    18,793.72/25,908.54 = 13,486.84/x
  3. Step 3: Cross multiply
    18,793.72x = 25,908.54 × 13,486.84
  4. Step 4: Simplify right side
    18,793.72x = 349,424,333.61
  5. Step 5: Solve for x
    x = 349,424,333.61/18,793.72
  6. Step 6: Final answer
    x = 18,592.61

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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.