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Finding the Fourth Proportional to 78,770.44, 118,174.15 and 48,409.41

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Solution

The fourth proportional to 78,770.44, 118,174.15 and 48,409.41 is: 72,625.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,770.44 : 118,174.15 = 48,409.41 : x
  2. Step 2: Convert to fraction form
    78,770.44/118,174.15 = 48,409.41/x
  3. Step 3: Cross multiply
    78,770.44x = 118,174.15 × 48,409.41
  4. Step 4: Simplify right side
    78,770.44x = 5,720,740,878.75
  5. Step 5: Solve for x
    x = 5,720,740,878.75/78,770.44
  6. Step 6: Final answer
    x = 72,625.48

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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.