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Finding the Fourth Proportional to 18,388.99, 25,372.94 and 12,024.91

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Solution

The fourth proportional to 18,388.99, 25,372.94 and 12,024.91 is: 16,591.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.99 : 25,372.94 = 12,024.91 : x
  2. Step 2: Convert to fraction form
    18,388.99/25,372.94 = 12,024.91/x
  3. Step 3: Cross multiply
    18,388.99x = 25,372.94 × 12,024.91
  4. Step 4: Simplify right side
    18,388.99x = 305,107,259.81
  5. Step 5: Solve for x
    x = 305,107,259.81/18,388.99
  6. Step 6: Final answer
    x = 16,591.84

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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.