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Finding the Fourth Proportional to 67,294.56, 92,845.94 and 38,994.78

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Solution

The fourth proportional to 67,294.56, 92,845.94 and 38,994.78 is: 53,800.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,294.56 : 92,845.94 = 38,994.78 : x
  2. Step 2: Convert to fraction form
    67,294.56/92,845.94 = 38,994.78/x
  3. Step 3: Cross multiply
    67,294.56x = 92,845.94 × 38,994.78
  4. Step 4: Simplify right side
    67,294.56x = 3,620,507,004.19
  5. Step 5: Solve for x
    x = 3,620,507,004.19/67,294.56
  6. Step 6: Final answer
    x = 53,800.89

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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.