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Finding the Fourth Proportional to 58,469.87, 87,704.61 and 21,029.88

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Solution

The fourth proportional to 58,469.87, 87,704.61 and 21,029.88 is: 31,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,469.87 : 87,704.61 = 21,029.88 : x
  2. Step 2: Convert to fraction form
    58,469.87/87,704.61 = 21,029.88/x
  3. Step 3: Cross multiply
    58,469.87x = 87,704.61 × 21,029.88
  4. Step 4: Simplify right side
    58,469.87x = 1,844,416,880.07
  5. Step 5: Solve for x
    x = 1,844,416,880.07/58,469.87
  6. Step 6: Final answer
    x = 31,544.74

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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.