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Finding the Fourth Proportional to 79,016.84, 118,463.74 and 39,553.64

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Solution

The fourth proportional to 79,016.84, 118,463.74 and 39,553.64 is: 59,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,016.84 : 118,463.74 = 39,553.64 : x
  2. Step 2: Convert to fraction form
    79,016.84/118,463.74 = 39,553.64/x
  3. Step 3: Cross multiply
    79,016.84x = 118,463.74 × 39,553.64
  4. Step 4: Simplify right side
    79,016.84x = 4,685,672,125.01
  5. Step 5: Solve for x
    x = 4,685,672,125.01/79,016.84
  6. Step 6: Final answer
    x = 59,299.66

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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.