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Finding the Fourth Proportional to 351,299.78, 527,033.52 and 114,642.90

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Solution

The fourth proportional to 351,299.78, 527,033.52 and 114,642.90 is: 171,991.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,299.78 : 527,033.52 = 114,642.90 : x
  2. Step 2: Convert to fraction form
    351,299.78/527,033.52 = 114,642.90/x
  3. Step 3: Cross multiply
    351,299.78x = 527,033.52 × 114,642.90
  4. Step 4: Simplify right side
    351,299.78x = 60,420,651,130.01
  5. Step 5: Solve for x
    x = 60,420,651,130.01/351,299.78
  6. Step 6: Final answer
    x = 171,991.71

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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.