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Finding the Fourth Proportional to 104,647.64, 142,481.66 and 104,315.48

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Solution

The fourth proportional to 104,647.64, 142,481.66 and 104,315.48 is: 142,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,647.64 : 142,481.66 = 104,315.48 : x
  2. Step 2: Convert to fraction form
    104,647.64/142,481.66 = 104,315.48/x
  3. Step 3: Cross multiply
    104,647.64x = 142,481.66 × 104,315.48
  4. Step 4: Simplify right side
    104,647.64x = 14,863,042,754.10
  5. Step 5: Solve for x
    x = 14,863,042,754.10/104,647.64
  6. Step 6: Final answer
    x = 142,029.41

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.