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Finding the Fourth Proportional to 18,630.70, 25,701.33 and 11,071.67

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Solution

The fourth proportional to 18,630.70, 25,701.33 and 11,071.67 is: 15,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.70 : 25,701.33 = 11,071.67 : x
  2. Step 2: Convert to fraction form
    18,630.70/25,701.33 = 11,071.67/x
  3. Step 3: Cross multiply
    18,630.70x = 25,701.33 × 11,071.67
  4. Step 4: Simplify right side
    18,630.70x = 284,556,716.91
  5. Step 5: Solve for x
    x = 284,556,716.91/18,630.70
  6. Step 6: Final answer
    x = 15,273.54

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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.