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Finding the Fourth Proportional to 79,906.70, 119,828.90 and 29,959.56

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Solution

The fourth proportional to 79,906.70, 119,828.90 and 29,959.56 is: 44,927.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,906.70 : 119,828.90 = 29,959.56 : x
  2. Step 2: Convert to fraction form
    79,906.70/119,828.90 = 29,959.56/x
  3. Step 3: Cross multiply
    79,906.70x = 119,828.90 × 29,959.56
  4. Step 4: Simplify right side
    79,906.70x = 3,590,020,969.49
  5. Step 5: Solve for x
    x = 3,590,020,969.49/79,906.70
  6. Step 6: Final answer
    x = 44,927.66

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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.