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Finding the Fourth Proportional to 71,716.44, 98,965.62 and 39,884.52

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Solution

The fourth proportional to 71,716.44, 98,965.62 and 39,884.52 is: 55,038.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,716.44 : 98,965.62 = 39,884.52 : x
  2. Step 2: Convert to fraction form
    71,716.44/98,965.62 = 39,884.52/x
  3. Step 3: Cross multiply
    71,716.44x = 98,965.62 × 39,884.52
  4. Step 4: Simplify right side
    71,716.44x = 3,947,196,250.20
  5. Step 5: Solve for x
    x = 3,947,196,250.20/71,716.44
  6. Step 6: Final answer
    x = 55,038.93

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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.