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Finding the Fourth Proportional to 80,409.72, 110,978.70 and 44,611.26

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Solution

The fourth proportional to 80,409.72, 110,978.70 and 44,611.26 is: 61,570.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,409.72 : 110,978.70 = 44,611.26 : x
  2. Step 2: Convert to fraction form
    80,409.72/110,978.70 = 44,611.26/x
  3. Step 3: Cross multiply
    80,409.72x = 110,978.70 × 44,611.26
  4. Step 4: Simplify right side
    80,409.72x = 4,950,899,528.63
  5. Step 5: Solve for x
    x = 4,950,899,528.63/80,409.72
  6. Step 6: Final answer
    x = 61,570.91

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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.