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Finding the Fourth Proportional to 79,078.79, 118,605.99 and 25,770.63

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Solution

The fourth proportional to 79,078.79, 118,605.99 and 25,770.63 is: 38,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,078.79 : 118,605.99 = 25,770.63 : x
  2. Step 2: Convert to fraction form
    79,078.79/118,605.99 = 25,770.63/x
  3. Step 3: Cross multiply
    79,078.79x = 118,605.99 × 25,770.63
  4. Step 4: Simplify right side
    79,078.79x = 3,056,551,084.07
  5. Step 5: Solve for x
    x = 3,056,551,084.07/79,078.79
  6. Step 6: Final answer
    x = 38,651.97

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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.