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Finding the Fourth Proportional to 49,866.51, 68,822.18 and 28,649.88

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Solution

The fourth proportional to 49,866.51, 68,822.18 and 28,649.88 is: 39,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,866.51 : 68,822.18 = 28,649.88 : x
  2. Step 2: Convert to fraction form
    49,866.51/68,822.18 = 28,649.88/x
  3. Step 3: Cross multiply
    49,866.51x = 68,822.18 × 28,649.88
  4. Step 4: Simplify right side
    49,866.51x = 1,971,747,198.34
  5. Step 5: Solve for x
    x = 1,971,747,198.34/49,866.51
  6. Step 6: Final answer
    x = 39,540.51

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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.