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Finding the Fourth Proportional to 41,909.74, 62,865.15 and 12,328.21

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Solution

The fourth proportional to 41,909.74, 62,865.15 and 12,328.21 is: 18,492.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,909.74 : 62,865.15 = 12,328.21 : x
  2. Step 2: Convert to fraction form
    41,909.74/62,865.15 = 12,328.21/x
  3. Step 3: Cross multiply
    41,909.74x = 62,865.15 × 12,328.21
  4. Step 4: Simplify right side
    41,909.74x = 775,014,770.88
  5. Step 5: Solve for x
    x = 775,014,770.88/41,909.74
  6. Step 6: Final answer
    x = 18,492.47

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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.