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Finding the Fourth Proportional to 12,093.72, 18,161.04 and 7,423.08

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Solution

The fourth proportional to 12,093.72, 18,161.04 and 7,423.08 is: 11,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,093.72 : 18,161.04 = 7,423.08 : x
  2. Step 2: Convert to fraction form
    12,093.72/18,161.04 = 7,423.08/x
  3. Step 3: Cross multiply
    12,093.72x = 18,161.04 × 7,423.08
  4. Step 4: Simplify right side
    12,093.72x = 134,810,852.80
  5. Step 5: Solve for x
    x = 134,810,852.80/12,093.72
  6. Step 6: Final answer
    x = 11,147.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.