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Finding the Fourth Proportional to 326,611.14, 489,726.02 and 126,697.92

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Solution

The fourth proportional to 326,611.14, 489,726.02 and 126,697.92 is: 189,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,611.14 : 489,726.02 = 126,697.92 : x
  2. Step 2: Convert to fraction form
    326,611.14/489,726.02 = 126,697.92/x
  3. Step 3: Cross multiply
    326,611.14x = 489,726.02 × 126,697.92
  4. Step 4: Simplify right side
    326,611.14x = 62,047,268,103.88
  5. Step 5: Solve for x
    x = 62,047,268,103.88/326,611.14
  6. Step 6: Final answer
    x = 189,972.91

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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.