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Finding the Fourth Proportional to 18,994.86, 26,207.19 and 11,034.18

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Solution

The fourth proportional to 18,994.86, 26,207.19 and 11,034.18 is: 15,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.86 : 26,207.19 = 11,034.18 : x
  2. Step 2: Convert to fraction form
    18,994.86/26,207.19 = 11,034.18/x
  3. Step 3: Cross multiply
    18,994.86x = 26,207.19 × 11,034.18
  4. Step 4: Simplify right side
    18,994.86x = 289,174,851.75
  5. Step 5: Solve for x
    x = 289,174,851.75/18,994.86
  6. Step 6: Final answer
    x = 15,223.85

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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.