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Finding the Fourth Proportional to 18,351.63, 25,324.40 and 10,393.67

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Solution

The fourth proportional to 18,351.63, 25,324.40 and 10,393.67 is: 14,342.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.63 : 25,324.40 = 10,393.67 : x
  2. Step 2: Convert to fraction form
    18,351.63/25,324.40 = 10,393.67/x
  3. Step 3: Cross multiply
    18,351.63x = 25,324.40 × 10,393.67
  4. Step 4: Simplify right side
    18,351.63x = 263,213,545.84
  5. Step 5: Solve for x
    x = 263,213,545.84/18,351.63
  6. Step 6: Final answer
    x = 14,342.79

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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.