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Finding the Fourth Proportional to 290,638.63, 400,914.09 and 181,553.33

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Solution

The fourth proportional to 290,638.63, 400,914.09 and 181,553.33 is: 250,439.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,638.63 : 400,914.09 = 181,553.33 : x
  2. Step 2: Convert to fraction form
    290,638.63/400,914.09 = 181,553.33/x
  3. Step 3: Cross multiply
    290,638.63x = 400,914.09 × 181,553.33
  4. Step 4: Simplify right side
    290,638.63x = 72,787,289,085.70
  5. Step 5: Solve for x
    x = 72,787,289,085.70/290,638.63
  6. Step 6: Final answer
    x = 250,439.14

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1.5x scale

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.