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Finding the Fourth Proportional to 71,494.20, 98,673.84 and 39,673.32

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Solution

The fourth proportional to 71,494.20, 98,673.84 and 39,673.32 is: 54,755.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,494.20 : 98,673.84 = 39,673.32 : x
  2. Step 2: Convert to fraction form
    71,494.20/98,673.84 = 39,673.32/x
  3. Step 3: Cross multiply
    71,494.20x = 98,673.84 × 39,673.32
  4. Step 4: Simplify right side
    71,494.20x = 3,914,718,829.95
  5. Step 5: Solve for x
    x = 3,914,718,829.95/71,494.20
  6. Step 6: Final answer
    x = 54,755.75

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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.