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Finding the Fourth Proportional to 78,890.44, 118,336.76 and 44,051.80

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Solution

The fourth proportional to 78,890.44, 118,336.76 and 44,051.80 is: 66,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,890.44 : 118,336.76 = 44,051.80 : x
  2. Step 2: Convert to fraction form
    78,890.44/118,336.76 = 44,051.80/x
  3. Step 3: Cross multiply
    78,890.44x = 118,336.76 × 44,051.80
  4. Step 4: Simplify right side
    78,890.44x = 5,212,947,284.17
  5. Step 5: Solve for x
    x = 5,212,947,284.17/78,890.44
  6. Step 6: Final answer
    x = 66,078.31

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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.