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Finding the Fourth Proportional to 58,578.60, 87,846.30 and 28,986.60

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Solution

The fourth proportional to 58,578.60, 87,846.30 and 28,986.60 is: 43,469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,578.60 : 87,846.30 = 28,986.60 : x
  2. Step 2: Convert to fraction form
    58,578.60/87,846.30 = 28,986.60/x
  3. Step 3: Cross multiply
    58,578.60x = 87,846.30 × 28,986.60
  4. Step 4: Simplify right side
    58,578.60x = 2,546,365,559.58
  5. Step 5: Solve for x
    x = 2,546,365,559.58/58,578.60
  6. Step 6: Final answer
    x = 43,469.21

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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.