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Finding the Fourth Proportional to 78,160.96, 107,871.60 and 44,170.88

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Solution

The fourth proportional to 78,160.96, 107,871.60 and 44,170.88 is: 60,961.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,160.96 : 107,871.60 = 44,170.88 : x
  2. Step 2: Convert to fraction form
    78,160.96/107,871.60 = 44,170.88/x
  3. Step 3: Cross multiply
    78,160.96x = 107,871.60 × 44,170.88
  4. Step 4: Simplify right side
    78,160.96x = 4,764,783,499.01
  5. Step 5: Solve for x
    x = 4,764,783,499.01/78,160.96
  6. Step 6: Final answer
    x = 60,961.17

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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.