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Finding the Fourth Proportional to 79,218.09, 118,827.81 and 63,383.88

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Solution

The fourth proportional to 79,218.09, 118,827.81 and 63,383.88 is: 95,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218.09 : 118,827.81 = 63,383.88 : x
  2. Step 2: Convert to fraction form
    79,218.09/118,827.81 = 63,383.88/x
  3. Step 3: Cross multiply
    79,218.09x = 118,827.81 × 63,383.88
  4. Step 4: Simplify right side
    79,218.09x = 7,531,767,649.70
  5. Step 5: Solve for x
    x = 7,531,767,649.70/79,218.09
  6. Step 6: Final answer
    x = 95,076.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.