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Finding the Fourth Proportional to 19,703.40, 27,166.50 and 12,238.44

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Solution

The fourth proportional to 19,703.40, 27,166.50 and 12,238.44 is: 16,874.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,703.40 : 27,166.50 = 12,238.44 : x
  2. Step 2: Convert to fraction form
    19,703.40/27,166.50 = 12,238.44/x
  3. Step 3: Cross multiply
    19,703.40x = 27,166.50 × 12,238.44
  4. Step 4: Simplify right side
    19,703.40x = 332,475,580.26
  5. Step 5: Solve for x
    x = 332,475,580.26/19,703.40
  6. Step 6: Final answer
    x = 16,874.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.