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Finding the Fourth Proportional to 339,778.05, 509,348.75 and 114,981.11

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Solution

The fourth proportional to 339,778.05, 509,348.75 and 114,981.11 is: 172,363.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,778.05 : 509,348.75 = 114,981.11 : x
  2. Step 2: Convert to fraction form
    339,778.05/509,348.75 = 114,981.11/x
  3. Step 3: Cross multiply
    339,778.05x = 509,348.75 × 114,981.11
  4. Step 4: Simplify right side
    339,778.05x = 58,565,481,530.46
  5. Step 5: Solve for x
    x = 58,565,481,530.46/339,778.05
  6. Step 6: Final answer
    x = 172,363.93

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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.