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Finding the Fourth Proportional to 84,879.97, 117,093.41 and 56,549.41

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Solution

The fourth proportional to 84,879.97, 117,093.41 and 56,549.41 is: 78,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,879.97 : 117,093.41 = 56,549.41 : x
  2. Step 2: Convert to fraction form
    84,879.97/117,093.41 = 56,549.41/x
  3. Step 3: Cross multiply
    84,879.97x = 117,093.41 × 56,549.41
  4. Step 4: Simplify right side
    84,879.97x = 6,621,562,967.64
  5. Step 5: Solve for x
    x = 6,621,562,967.64/84,879.97
  6. Step 6: Final answer
    x = 78,010.90

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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.