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Finding the Fourth Proportional to 326,043.88, 489,067.44 and 148,426.66

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Solution

The fourth proportional to 326,043.88, 489,067.44 and 148,426.66 is: 222,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,043.88 : 489,067.44 = 148,426.66 : x
  2. Step 2: Convert to fraction form
    326,043.88/489,067.44 = 148,426.66/x
  3. Step 3: Cross multiply
    326,043.88x = 489,067.44 × 148,426.66
  4. Step 4: Simplify right side
    326,043.88x = 72,590,646,633.95
  5. Step 5: Solve for x
    x = 72,590,646,633.95/326,043.88
  6. Step 6: Final answer
    x = 222,640.73

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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.