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Finding the Fourth Proportional to 58,620.60, 80,896.32 and 31,763.79

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Solution

The fourth proportional to 58,620.60, 80,896.32 and 31,763.79 is: 43,833.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,620.60 : 80,896.32 = 31,763.79 : x
  2. Step 2: Convert to fraction form
    58,620.60/80,896.32 = 31,763.79/x
  3. Step 3: Cross multiply
    58,620.60x = 80,896.32 × 31,763.79
  4. Step 4: Simplify right side
    58,620.60x = 2,569,573,720.25
  5. Step 5: Solve for x
    x = 2,569,573,720.25/58,620.60
  6. Step 6: Final answer
    x = 43,833.97

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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.