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Finding the Fourth Proportional to 289,238.88, 399,102.19 and 181,732.78

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Solution

The fourth proportional to 289,238.88, 399,102.19 and 181,732.78 is: 250,761.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,238.88 : 399,102.19 = 181,732.78 : x
  2. Step 2: Convert to fraction form
    289,238.88/399,102.19 = 181,732.78/x
  3. Step 3: Cross multiply
    289,238.88x = 399,102.19 × 181,732.78
  4. Step 4: Simplify right side
    289,238.88x = 72,529,950,537.33
  5. Step 5: Solve for x
    x = 72,529,950,537.33/289,238.88
  6. Step 6: Final answer
    x = 250,761.41

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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.