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Finding the Fourth Proportional to 174,633.69, 261,731.55 and 74,676.57

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Solution

The fourth proportional to 174,633.69, 261,731.55 and 74,676.57 is: 111,921.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,633.69 : 261,731.55 = 74,676.57 : x
  2. Step 2: Convert to fraction form
    174,633.69/261,731.55 = 74,676.57/x
  3. Step 3: Cross multiply
    174,633.69x = 261,731.55 × 74,676.57
  4. Step 4: Simplify right side
    174,633.69x = 19,545,214,414.78
  5. Step 5: Solve for x
    x = 19,545,214,414.78/174,633.69
  6. Step 6: Final answer
    x = 111,921.21

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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.