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Finding the Fourth Proportional to 339,772.66, 509,662.00 and 103,115.30

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Solution

The fourth proportional to 339,772.66, 509,662.00 and 103,115.30 is: 154,673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,772.66 : 509,662.00 = 103,115.30 : x
  2. Step 2: Convert to fraction form
    339,772.66/509,662.00 = 103,115.30/x
  3. Step 3: Cross multiply
    339,772.66x = 509,662.00 × 103,115.30
  4. Step 4: Simplify right side
    339,772.66x = 52,553,949,133.73
  5. Step 5: Solve for x
    x = 52,553,949,133.73/339,772.66
  6. Step 6: Final answer
    x = 154,673.86

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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.