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Finding the Fourth Proportional to 18,974.60, 26,512.60 and 18,974.60

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Solution

The fourth proportional to 18,974.60, 26,512.60 and 18,974.60 is: 26,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,974.60 : 26,512.60 = 18,974.60 : x
  2. Step 2: Convert to fraction form
    18,974.60/26,512.60 = 18,974.60/x
  3. Step 3: Cross multiply
    18,974.60x = 26,512.60 × 18,974.60
  4. Step 4: Simplify right side
    18,974.60x = 503,065,979.96
  5. Step 5: Solve for x
    x = 503,065,979.96/18,974.60
  6. Step 6: Final answer
    x = 26,512.60

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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.