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Finding the Fourth Proportional to 58,471.70, 87,720.72 and 18,493.11

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Solution

The fourth proportional to 58,471.70, 87,720.72 and 18,493.11 is: 27,743.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,471.70 : 87,720.72 = 18,493.11 : x
  2. Step 2: Convert to fraction form
    58,471.70/87,720.72 = 18,493.11/x
  3. Step 3: Cross multiply
    58,471.70x = 87,720.72 × 18,493.11
  4. Step 4: Simplify right side
    58,471.70x = 1,622,228,525.94
  5. Step 5: Solve for x
    x = 1,622,228,525.94/58,471.70
  6. Step 6: Final answer
    x = 27,743.82

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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.