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Finding the Fourth Proportional to 331,991.72, 458,144.58 and 181,085.48

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Solution

The fourth proportional to 331,991.72, 458,144.58 and 181,085.48 is: 249,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,991.72 : 458,144.58 = 181,085.48 : x
  2. Step 2: Convert to fraction form
    331,991.72/458,144.58 = 181,085.48/x
  3. Step 3: Cross multiply
    331,991.72x = 458,144.58 × 181,085.48
  4. Step 4: Simplify right side
    331,991.72x = 82,963,331,178.70
  5. Step 5: Solve for x
    x = 82,963,331,178.70/331,991.72
  6. Step 6: Final answer
    x = 249,895.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.