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Finding the Fourth Proportional to 74,690.70, 103,039.83 and 50,483.94

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Solution

The fourth proportional to 74,690.70, 103,039.83 and 50,483.94 is: 69,645.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,690.70 : 103,039.83 = 50,483.94 : x
  2. Step 2: Convert to fraction form
    74,690.70/103,039.83 = 50,483.94/x
  3. Step 3: Cross multiply
    74,690.70x = 103,039.83 × 50,483.94
  4. Step 4: Simplify right side
    74,690.70x = 5,201,856,595.33
  5. Step 5: Solve for x
    x = 5,201,856,595.33/74,690.70
  6. Step 6: Final answer
    x = 69,645.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.