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Finding the Fourth Proportional to 44,642.56, 66,975.09 and 31,520.56

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Solution

The fourth proportional to 44,642.56, 66,975.09 and 31,520.56 is: 47,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,642.56 : 66,975.09 = 31,520.56 : x
  2. Step 2: Convert to fraction form
    44,642.56/66,975.09 = 31,520.56/x
  3. Step 3: Cross multiply
    44,642.56x = 66,975.09 × 31,520.56
  4. Step 4: Simplify right side
    44,642.56x = 2,111,092,342.85
  5. Step 5: Solve for x
    x = 2,111,092,342.85/44,642.56
  6. Step 6: Final answer
    x = 47,288.78

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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.