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Finding the Fourth Proportional to 18,546.60, 25,999.80 and 18,546.60

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Solution

The fourth proportional to 18,546.60, 25,999.80 and 18,546.60 is: 25,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,546.60 : 25,999.80 = 18,546.60 : x
  2. Step 2: Convert to fraction form
    18,546.60/25,999.80 = 18,546.60/x
  3. Step 3: Cross multiply
    18,546.60x = 25,999.80 × 18,546.60
  4. Step 4: Simplify right side
    18,546.60x = 482,207,890.68
  5. Step 5: Solve for x
    x = 482,207,890.68/18,546.60
  6. Step 6: Final answer
    x = 25,999.80

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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.