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Finding the Fourth Proportional to 19,189, 26,480.82 and 11,230.84

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Solution

The fourth proportional to 19,189, 26,480.82 and 11,230.84 is: 15,498.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,189 : 26,480.82 = 11,230.84 : x
  2. Step 2: Convert to fraction form
    19,189/26,480.82 = 11,230.84/x
  3. Step 3: Cross multiply
    19,189x = 26,480.82 × 11,230.84
  4. Step 4: Simplify right side
    19,189x = 297,401,852.49
  5. Step 5: Solve for x
    x = 297,401,852.49/19,189
  6. Step 6: Final answer
    x = 15,498.56

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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.