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Finding the Fourth Proportional to 18,907.26, 26,090.91 and 10,948.92

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Solution

The fourth proportional to 18,907.26, 26,090.91 and 10,948.92 is: 15,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.26 : 26,090.91 = 10,948.92 : x
  2. Step 2: Convert to fraction form
    18,907.26/26,090.91 = 10,948.92/x
  3. Step 3: Cross multiply
    18,907.26x = 26,090.91 × 10,948.92
  4. Step 4: Simplify right side
    18,907.26x = 285,667,286.32
  5. Step 5: Solve for x
    x = 285,667,286.32/18,907.26
  6. Step 6: Final answer
    x = 15,108.87

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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.