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Finding the Fourth Proportional to 28,137.54, 38,811.39 and 16,798.19

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Solution

The fourth proportional to 28,137.54, 38,811.39 and 16,798.19 is: 23,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.54 : 38,811.39 = 16,798.19 : x
  2. Step 2: Convert to fraction form
    28,137.54/38,811.39 = 16,798.19/x
  3. Step 3: Cross multiply
    28,137.54x = 38,811.39 × 16,798.19
  4. Step 4: Simplify right side
    28,137.54x = 651,960,846.33
  5. Step 5: Solve for x
    x = 651,960,846.33/28,137.54
  6. Step 6: Final answer
    x = 23,170.50

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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.