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Finding the Fourth Proportional to 78,893.84, 118,375.44 and 41,445.21

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Solution

The fourth proportional to 78,893.84, 118,375.44 and 41,445.21 is: 62,186.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,893.84 : 118,375.44 = 41,445.21 : x
  2. Step 2: Convert to fraction form
    78,893.84/118,375.44 = 41,445.21/x
  3. Step 3: Cross multiply
    78,893.84x = 118,375.44 × 41,445.21
  4. Step 4: Simplify right side
    78,893.84x = 4,906,094,969.64
  5. Step 5: Solve for x
    x = 4,906,094,969.64/78,893.84
  6. Step 6: Final answer
    x = 62,186.03

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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.