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Finding the Fourth Proportional to 19,187.27, 28,784.79 and 8,093.99

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Solution

The fourth proportional to 19,187.27, 28,784.79 and 8,093.99 is: 12,142.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.27 : 28,784.79 = 8,093.99 : x
  2. Step 2: Convert to fraction form
    19,187.27/28,784.79 = 8,093.99/x
  3. Step 3: Cross multiply
    19,187.27x = 28,784.79 × 8,093.99
  4. Step 4: Simplify right side
    19,187.27x = 232,983,802.41
  5. Step 5: Solve for x
    x = 232,983,802.41/19,187.27
  6. Step 6: Final answer
    x = 12,142.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.