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Finding the Fourth Proportional to 15,197.88, 20,984.94 and 11,655.48

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Solution

The fourth proportional to 15,197.88, 20,984.94 and 11,655.48 is: 16,093.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,197.88 : 20,984.94 = 11,655.48 : x
  2. Step 2: Convert to fraction form
    15,197.88/20,984.94 = 11,655.48/x
  3. Step 3: Cross multiply
    15,197.88x = 20,984.94 × 11,655.48
  4. Step 4: Simplify right side
    15,197.88x = 244,589,548.47
  5. Step 5: Solve for x
    x = 244,589,548.47/15,197.88
  6. Step 6: Final answer
    x = 16,093.66

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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.