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Finding the Fourth Proportional to 141,879.87, 212,824.26 and 53,116.43

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Solution

The fourth proportional to 141,879.87, 212,824.26 and 53,116.43 is: 79,676.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,879.87 : 212,824.26 = 53,116.43 : x
  2. Step 2: Convert to fraction form
    141,879.87/212,824.26 = 53,116.43/x
  3. Step 3: Cross multiply
    141,879.87x = 212,824.26 × 53,116.43
  4. Step 4: Simplify right side
    141,879.87x = 11,304,463,844.47
  5. Step 5: Solve for x
    x = 11,304,463,844.47/141,879.87
  6. Step 6: Final answer
    x = 79,676.31

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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.