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Finding the Fourth Proportional to 70,428.88, 105,667.62 and 44,102.26

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Solution

The fourth proportional to 70,428.88, 105,667.62 and 44,102.26 is: 66,168.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,428.88 : 105,667.62 = 44,102.26 : x
  2. Step 2: Convert to fraction form
    70,428.88/105,667.62 = 44,102.26/x
  3. Step 3: Cross multiply
    70,428.88x = 105,667.62 × 44,102.26
  4. Step 4: Simplify right side
    70,428.88x = 4,660,180,850.82
  5. Step 5: Solve for x
    x = 4,660,180,850.82/70,428.88
  6. Step 6: Final answer
    x = 66,168.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.