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Finding the Fourth Proportional to 28,790.44, 39,728.07 and 16,041.44

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Solution

The fourth proportional to 28,790.44, 39,728.07 and 16,041.44 is: 22,135.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,790.44 : 39,728.07 = 16,041.44 : x
  2. Step 2: Convert to fraction form
    28,790.44/39,728.07 = 16,041.44/x
  3. Step 3: Cross multiply
    28,790.44x = 39,728.07 × 16,041.44
  4. Step 4: Simplify right side
    28,790.44x = 637,295,550.54
  5. Step 5: Solve for x
    x = 637,295,550.54/28,790.44
  6. Step 6: Final answer
    x = 22,135.67

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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.