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Finding the Fourth Proportional to 13,968.15, 20,965.39 and 5,092.06

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Solution

The fourth proportional to 13,968.15, 20,965.39 and 5,092.06 is: 7,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,968.15 : 20,965.39 = 5,092.06 : x
  2. Step 2: Convert to fraction form
    13,968.15/20,965.39 = 5,092.06/x
  3. Step 3: Cross multiply
    13,968.15x = 20,965.39 × 5,092.06
  4. Step 4: Simplify right side
    13,968.15x = 106,757,026.61
  5. Step 5: Solve for x
    x = 106,757,026.61/13,968.15
  6. Step 6: Final answer
    x = 7,642.89

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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.