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Finding the Fourth Proportional to 58,576.68, 87,866.10 and 21,139.56

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Solution

The fourth proportional to 58,576.68, 87,866.10 and 21,139.56 is: 31,709.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,576.68 : 87,866.10 = 21,139.56 : x
  2. Step 2: Convert to fraction form
    58,576.68/87,866.10 = 21,139.56/x
  3. Step 3: Cross multiply
    58,576.68x = 87,866.10 × 21,139.56
  4. Step 4: Simplify right side
    58,576.68x = 1,857,450,692.92
  5. Step 5: Solve for x
    x = 1,857,450,692.92/58,576.68
  6. Step 6: Final answer
    x = 31,709.73

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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.