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Finding the Fourth Proportional to 289,203.26, 399,115.78 and 181,733.54

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Solution

The fourth proportional to 289,203.26, 399,115.78 and 181,733.54 is: 250,801.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,203.26 : 399,115.78 = 181,733.54 : x
  2. Step 2: Convert to fraction form
    289,203.26/399,115.78 = 181,733.54/x
  3. Step 3: Cross multiply
    289,203.26x = 399,115.78 × 181,733.54
  4. Step 4: Simplify right side
    289,203.26x = 72,532,723,569.26
  5. Step 5: Solve for x
    x = 72,532,723,569.26/289,203.26
  6. Step 6: Final answer
    x = 250,801.89

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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.