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Finding the Fourth Proportional to 18,907.43, 26,093.76 and 10,949.80

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Solution

The fourth proportional to 18,907.43, 26,093.76 and 10,949.80 is: 15,111.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.43 : 26,093.76 = 10,949.80 : x
  2. Step 2: Convert to fraction form
    18,907.43/26,093.76 = 10,949.80/x
  3. Step 3: Cross multiply
    18,907.43x = 26,093.76 × 10,949.80
  4. Step 4: Simplify right side
    18,907.43x = 285,721,453.25
  5. Step 5: Solve for x
    x = 285,721,453.25/18,907.43
  6. Step 6: Final answer
    x = 15,111.60

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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.