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Finding the Fourth Proportional to 58,122.70, 87,072.90 and 39,310.30

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Solution

The fourth proportional to 58,122.70, 87,072.90 and 39,310.30 is: 58,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,122.70 : 87,072.90 = 39,310.30 : x
  2. Step 2: Convert to fraction form
    58,122.70/87,072.90 = 39,310.30/x
  3. Step 3: Cross multiply
    58,122.70x = 87,072.90 × 39,310.30
  4. Step 4: Simplify right side
    58,122.70x = 3,422,861,820.87
  5. Step 5: Solve for x
    x = 3,422,861,820.87/58,122.70
  6. Step 6: Final answer
    x = 58,890.28

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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.