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Finding the Fourth Proportional to 18,291.96, 25,224.40 and 14,923.96

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Solution

The fourth proportional to 18,291.96, 25,224.40 and 14,923.96 is: 20,579.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.96 : 25,224.40 = 14,923.96 : x
  2. Step 2: Convert to fraction form
    18,291.96/25,224.40 = 14,923.96/x
  3. Step 3: Cross multiply
    18,291.96x = 25,224.40 × 14,923.96
  4. Step 4: Simplify right side
    18,291.96x = 376,447,936.62
  5. Step 5: Solve for x
    x = 376,447,936.62/18,291.96
  6. Step 6: Final answer
    x = 20,579.97

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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.