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Finding the Fourth Proportional to 19,542.21, 26,968.50 and 11,883.21

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Solution

The fourth proportional to 19,542.21, 26,968.50 and 11,883.21 is: 16,398.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,542.21 : 26,968.50 = 11,883.21 : x
  2. Step 2: Convert to fraction form
    19,542.21/26,968.50 = 11,883.21/x
  3. Step 3: Cross multiply
    19,542.21x = 26,968.50 × 11,883.21
  4. Step 4: Simplify right side
    19,542.21x = 320,472,348.89
  5. Step 5: Solve for x
    x = 320,472,348.89/19,542.21
  6. Step 6: Final answer
    x = 16,398.98

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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.