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Finding the Fourth Proportional to 58,912.20, 88,238.70 and 51,136.20

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Solution

The fourth proportional to 58,912.20, 88,238.70 and 51,136.20 is: 76,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,912.20 : 88,238.70 = 51,136.20 : x
  2. Step 2: Convert to fraction form
    58,912.20/88,238.70 = 51,136.20/x
  3. Step 3: Cross multiply
    58,912.20x = 88,238.70 × 51,136.20
  4. Step 4: Simplify right side
    58,912.20x = 4,512,191,810.94
  5. Step 5: Solve for x
    x = 4,512,191,810.94/58,912.20
  6. Step 6: Final answer
    x = 76,591.81

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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.