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Finding the Fourth Proportional to 49,136.70, 73,595.70 and 40,388.70

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Solution

The fourth proportional to 49,136.70, 73,595.70 and 40,388.70 is: 60,493.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,136.70 : 73,595.70 = 40,388.70 : x
  2. Step 2: Convert to fraction form
    49,136.70/73,595.70 = 40,388.70/x
  3. Step 3: Cross multiply
    49,136.70x = 73,595.70 × 40,388.70
  4. Step 4: Simplify right side
    49,136.70x = 2,972,434,648.59
  5. Step 5: Solve for x
    x = 2,972,434,648.59/49,136.70
  6. Step 6: Final answer
    x = 60,493.17

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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.