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Finding the Fourth Proportional to 72,968.55, 100,695.25 and 41,137.47

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Solution

The fourth proportional to 72,968.55, 100,695.25 and 41,137.47 is: 56,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,968.55 : 100,695.25 = 41,137.47 : x
  2. Step 2: Convert to fraction form
    72,968.55/100,695.25 = 41,137.47/x
  3. Step 3: Cross multiply
    72,968.55x = 100,695.25 × 41,137.47
  4. Step 4: Simplify right side
    72,968.55x = 4,142,347,877.44
  5. Step 5: Solve for x
    x = 4,142,347,877.44/72,968.55
  6. Step 6: Final answer
    x = 56,768.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.