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Finding the Fourth Proportional to 58,500, 80,759.86 and 40,563.86

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Solution

The fourth proportional to 58,500, 80,759.86 and 40,563.86 is: 55,998.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,500 : 80,759.86 = 40,563.86 : x
  2. Step 2: Convert to fraction form
    58,500/80,759.86 = 40,563.86/x
  3. Step 3: Cross multiply
    58,500x = 80,759.86 × 40,563.86
  4. Step 4: Simplify right side
    58,500x = 3,275,931,654.66
  5. Step 5: Solve for x
    x = 3,275,931,654.66/58,500
  6. Step 6: Final answer
    x = 55,998.83

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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.