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Finding the Fourth Proportional to 18,255.70, 25,627.10 and 18,255.70

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Solution

The fourth proportional to 18,255.70, 25,627.10 and 18,255.70 is: 25,627.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.70 : 25,627.10 = 18,255.70 : x
  2. Step 2: Convert to fraction form
    18,255.70/25,627.10 = 18,255.70/x
  3. Step 3: Cross multiply
    18,255.70x = 25,627.10 × 18,255.70
  4. Step 4: Simplify right side
    18,255.70x = 467,840,649.47
  5. Step 5: Solve for x
    x = 467,840,649.47/18,255.70
  6. Step 6: Final answer
    x = 25,627.10

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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.