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Finding the Fourth Proportional to 18,108.63, 24,991.74 and 11,039.22

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Solution

The fourth proportional to 18,108.63, 24,991.74 and 11,039.22 is: 15,235.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.63 : 24,991.74 = 11,039.22 : x
  2. Step 2: Convert to fraction form
    18,108.63/24,991.74 = 11,039.22/x
  3. Step 3: Cross multiply
    18,108.63x = 24,991.74 × 11,039.22
  4. Step 4: Simplify right side
    18,108.63x = 275,889,316.04
  5. Step 5: Solve for x
    x = 275,889,316.04/18,108.63
  6. Step 6: Final answer
    x = 15,235.24

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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.