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Finding the Fourth Proportional to 74,796.40, 103,188.90 and 47,933.97

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Solution

The fourth proportional to 74,796.40, 103,188.90 and 47,933.97 is: 66,129.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,796.40 : 103,188.90 = 47,933.97 : x
  2. Step 2: Convert to fraction form
    74,796.40/103,188.90 = 47,933.97/x
  3. Step 3: Cross multiply
    74,796.40x = 103,188.90 × 47,933.97
  4. Step 4: Simplify right side
    74,796.40x = 4,946,253,636.93
  5. Step 5: Solve for x
    x = 4,946,253,636.93/74,796.40
  6. Step 6: Final answer
    x = 66,129.57

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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.