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Finding the Fourth Proportional to 18,994.05, 26,203.07 and 11,034.78

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Solution

The fourth proportional to 18,994.05, 26,203.07 and 11,034.78 is: 15,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.05 : 26,203.07 = 11,034.78 : x
  2. Step 2: Convert to fraction form
    18,994.05/26,203.07 = 11,034.78/x
  3. Step 3: Cross multiply
    18,994.05x = 26,203.07 × 11,034.78
  4. Step 4: Simplify right side
    18,994.05x = 289,145,057.60
  5. Step 5: Solve for x
    x = 289,145,057.60/18,994.05
  6. Step 6: Final answer
    x = 15,222.93

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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.