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Finding the Fourth Proportional to 19,191.70, 28,650.50 and 16,238.44

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Solution

The fourth proportional to 19,191.70, 28,650.50 and 16,238.44 is: 24,241.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.70 : 28,650.50 = 16,238.44 : x
  2. Step 2: Convert to fraction form
    19,191.70/28,650.50 = 16,238.44/x
  3. Step 3: Cross multiply
    19,191.70x = 28,650.50 × 16,238.44
  4. Step 4: Simplify right side
    19,191.70x = 465,239,425.22
  5. Step 5: Solve for x
    x = 465,239,425.22/19,191.70
  6. Step 6: Final answer
    x = 24,241.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.