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Finding the Fourth Proportional to 18,512.10, 25,982.55 and 18,512.10

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Solution

The fourth proportional to 18,512.10, 25,982.55 and 18,512.10 is: 25,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.10 : 25,982.55 = 18,512.10 : x
  2. Step 2: Convert to fraction form
    18,512.10/25,982.55 = 18,512.10/x
  3. Step 3: Cross multiply
    18,512.10x = 25,982.55 × 18,512.10
  4. Step 4: Simplify right side
    18,512.10x = 480,991,563.86
  5. Step 5: Solve for x
    x = 480,991,563.86/18,512.10
  6. Step 6: Final answer
    x = 25,982.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.