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Finding the Fourth Proportional to 70,392.65, 105,517.89 and 44,115.84

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Solution

The fourth proportional to 70,392.65, 105,517.89 and 44,115.84 is: 66,129.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,392.65 : 105,517.89 = 44,115.84 : x
  2. Step 2: Convert to fraction form
    70,392.65/105,517.89 = 44,115.84/x
  3. Step 3: Cross multiply
    70,392.65x = 105,517.89 × 44,115.84
  4. Step 4: Simplify right side
    70,392.65x = 4,655,010,352.38
  5. Step 5: Solve for x
    x = 4,655,010,352.38/70,392.65
  6. Step 6: Final answer
    x = 66,129.21

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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.