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Finding the Fourth Proportional to 122,479.68, 183,672.30 and 47,589.98

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Solution

The fourth proportional to 122,479.68, 183,672.30 and 47,589.98 is: 71,366.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,479.68 : 183,672.30 = 47,589.98 : x
  2. Step 2: Convert to fraction form
    122,479.68/183,672.30 = 47,589.98/x
  3. Step 3: Cross multiply
    122,479.68x = 183,672.30 × 47,589.98
  4. Step 4: Simplify right side
    122,479.68x = 8,740,961,083.55
  5. Step 5: Solve for x
    x = 8,740,961,083.55/122,479.68
  6. Step 6: Final answer
    x = 71,366.62

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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.