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Finding the Fourth Proportional to 104,140.89, 143,713.31 and 58,818.96

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Solution

The fourth proportional to 104,140.89, 143,713.31 and 58,818.96 is: 81,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,140.89 : 143,713.31 = 58,818.96 : x
  2. Step 2: Convert to fraction form
    104,140.89/143,713.31 = 58,818.96/x
  3. Step 3: Cross multiply
    104,140.89x = 143,713.31 × 58,818.96
  4. Step 4: Simplify right side
    104,140.89x = 8,453,067,138.26
  5. Step 5: Solve for x
    x = 8,453,067,138.26/104,140.89
  6. Step 6: Final answer
    x = 81,169.53

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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.