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Finding the Fourth Proportional to 86,042.86, 129,050.97 and 43,954.06

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Solution

The fourth proportional to 86,042.86, 129,050.97 and 43,954.06 is: 65,924.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,042.86 : 129,050.97 = 43,954.06 : x
  2. Step 2: Convert to fraction form
    86,042.86/129,050.97 = 43,954.06/x
  3. Step 3: Cross multiply
    86,042.86x = 129,050.97 × 43,954.06
  4. Step 4: Simplify right side
    86,042.86x = 5,672,314,078.44
  5. Step 5: Solve for x
    x = 5,672,314,078.44/86,042.86
  6. Step 6: Final answer
    x = 65,924.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.