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Finding the Fourth Proportional to 78,191.43, 107,905.83 and 44,197.89

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Solution

The fourth proportional to 78,191.43, 107,905.83 and 44,197.89 is: 60,994.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,191.43 : 107,905.83 = 44,197.89 : x
  2. Step 2: Convert to fraction form
    78,191.43/107,905.83 = 44,197.89/x
  3. Step 3: Cross multiply
    78,191.43x = 107,905.83 × 44,197.89
  4. Step 4: Simplify right side
    78,191.43x = 4,769,210,004.70
  5. Step 5: Solve for x
    x = 4,769,210,004.70/78,191.43
  6. Step 6: Final answer
    x = 60,994.02

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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.