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Finding the Fourth Proportional to 104,640.99, 144,403.83 and 56,894.37

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Solution

The fourth proportional to 104,640.99, 144,403.83 and 56,894.37 is: 78,513.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.99 : 144,403.83 = 56,894.37 : x
  2. Step 2: Convert to fraction form
    104,640.99/144,403.83 = 56,894.37/x
  3. Step 3: Cross multiply
    104,640.99x = 144,403.83 × 56,894.37
  4. Step 4: Simplify right side
    104,640.99x = 8,215,764,933.44
  5. Step 5: Solve for x
    x = 8,215,764,933.44/104,640.99
  6. Step 6: Final answer
    x = 78,513.83

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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.