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Finding the Fourth Proportional to 104,260.54, 143,879.80 and 56,513.84

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Solution

The fourth proportional to 104,260.54, 143,879.80 and 56,513.84 is: 77,989.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,260.54 : 143,879.80 = 56,513.84 : x
  2. Step 2: Convert to fraction form
    104,260.54/143,879.80 = 56,513.84/x
  3. Step 3: Cross multiply
    104,260.54x = 143,879.80 × 56,513.84
  4. Step 4: Simplify right side
    104,260.54x = 8,131,199,996.43
  5. Step 5: Solve for x
    x = 8,131,199,996.43/104,260.54
  6. Step 6: Final answer
    x = 77,989.24

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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.