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Finding the Fourth Proportional to 18,513.36, 25,560.36 and 16,520.49

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Solution

The fourth proportional to 18,513.36, 25,560.36 and 16,520.49 is: 22,808.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,513.36 : 25,560.36 = 16,520.49 : x
  2. Step 2: Convert to fraction form
    18,513.36/25,560.36 = 16,520.49/x
  3. Step 3: Cross multiply
    18,513.36x = 25,560.36 × 16,520.49
  4. Step 4: Simplify right side
    18,513.36x = 422,269,671.78
  5. Step 5: Solve for x
    x = 422,269,671.78/18,513.36
  6. Step 6: Final answer
    x = 22,808.92

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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.