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Finding the Fourth Proportional to 29,231.80, 43,865.70 and 12,599.80

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Solution

The fourth proportional to 29,231.80, 43,865.70 and 12,599.80 is: 18,907.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,231.80 : 43,865.70 = 12,599.80 : x
  2. Step 2: Convert to fraction form
    29,231.80/43,865.70 = 12,599.80/x
  3. Step 3: Cross multiply
    29,231.80x = 43,865.70 × 12,599.80
  4. Step 4: Simplify right side
    29,231.80x = 552,699,046.86
  5. Step 5: Solve for x
    x = 552,699,046.86/29,231.80
  6. Step 6: Final answer
    x = 18,907.46

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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.