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Finding the Fourth Proportional to 29,043.30, 40,067.82 and 18,968.25

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Solution

The fourth proportional to 29,043.30, 40,067.82 and 18,968.25 is: 26,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,043.30 : 40,067.82 = 18,968.25 : x
  2. Step 2: Convert to fraction form
    29,043.30/40,067.82 = 18,968.25/x
  3. Step 3: Cross multiply
    29,043.30x = 40,067.82 × 18,968.25
  4. Step 4: Simplify right side
    29,043.30x = 760,016,426.72
  5. Step 5: Solve for x
    x = 760,016,426.72/29,043.30
  6. Step 6: Final answer
    x = 26,168.39

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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.