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Finding the Fourth Proportional to 339,579.66, 509,012.22 and 114,726.90

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Solution

The fourth proportional to 339,579.66, 509,012.22 and 114,726.90 is: 171,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,579.66 : 509,012.22 = 114,726.90 : x
  2. Step 2: Convert to fraction form
    339,579.66/509,012.22 = 114,726.90/x
  3. Step 3: Cross multiply
    339,579.66x = 509,012.22 × 114,726.90
  4. Step 4: Simplify right side
    339,579.66x = 58,397,394,062.72
  5. Step 5: Solve for x
    x = 58,397,394,062.72/339,579.66
  6. Step 6: Final answer
    x = 171,969.65

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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.