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Finding the Fourth Proportional to 58,704.20, 87,900.78 and 30,943.88

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Solution

The fourth proportional to 58,704.20, 87,900.78 and 30,943.88 is: 46,333.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,704.20 : 87,900.78 = 30,943.88 : x
  2. Step 2: Convert to fraction form
    58,704.20/87,900.78 = 30,943.88/x
  3. Step 3: Cross multiply
    58,704.20x = 87,900.78 × 30,943.88
  4. Step 4: Simplify right side
    58,704.20x = 2,719,991,188.23
  5. Step 5: Solve for x
    x = 2,719,991,188.23/58,704.20
  6. Step 6: Final answer
    x = 46,333.84

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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.