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Finding the Fourth Proportional to 104,878.44, 144,734.48 and 57,131.68

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Solution

The fourth proportional to 104,878.44, 144,734.48 and 57,131.68 is: 78,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,878.44 : 144,734.48 = 57,131.68 : x
  2. Step 2: Convert to fraction form
    104,878.44/144,734.48 = 57,131.68/x
  3. Step 3: Cross multiply
    104,878.44x = 144,734.48 × 57,131.68
  4. Step 4: Simplify right side
    104,878.44x = 8,268,923,710.67
  5. Step 5: Solve for x
    x = 8,268,923,710.67/104,878.44
  6. Step 6: Final answer
    x = 78,842.94

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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.