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Finding the Fourth Proportional to 339,578.66, 509,010.72 and 114,725.90

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Solution

The fourth proportional to 339,578.66, 509,010.72 and 114,725.90 is: 171,968.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,578.66 : 509,010.72 = 114,725.90 : x
  2. Step 2: Convert to fraction form
    339,578.66/509,010.72 = 114,725.90/x
  3. Step 3: Cross multiply
    339,578.66x = 509,010.72 × 114,725.90
  4. Step 4: Simplify right side
    339,578.66x = 58,396,712,961.65
  5. Step 5: Solve for x
    x = 58,396,712,961.65/339,578.66
  6. Step 6: Final answer
    x = 171,968.15

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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.