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Finding the Fourth Proportional to 289,239.88, 399,103.57 and 181,733.78

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Solution

The fourth proportional to 289,239.88, 399,103.57 and 181,733.78 is: 250,762.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,239.88 : 399,103.57 = 181,733.78 : x
  2. Step 2: Convert to fraction form
    289,239.88/399,103.57 = 181,733.78/x
  3. Step 3: Cross multiply
    289,239.88x = 399,103.57 × 181,733.78
  4. Step 4: Simplify right side
    289,239.88x = 72,530,600,387.59
  5. Step 5: Solve for x
    x = 72,530,600,387.59/289,239.88
  6. Step 6: Final answer
    x = 250,762.79

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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.