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Finding the Fourth Proportional to 79,930.97, 110,307.42 and 43,634.57

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Solution

The fourth proportional to 79,930.97, 110,307.42 and 43,634.57 is: 60,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,930.97 : 110,307.42 = 43,634.57 : x
  2. Step 2: Convert to fraction form
    79,930.97/110,307.42 = 43,634.57/x
  3. Step 3: Cross multiply
    79,930.97x = 110,307.42 × 43,634.57
  4. Step 4: Simplify right side
    79,930.97x = 4,813,216,839.51
  5. Step 5: Solve for x
    x = 4,813,216,839.51/79,930.97
  6. Step 6: Final answer
    x = 60,217.17

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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.