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Finding the Fourth Proportional to 71,731.49, 98,980.92 and 41,518.08

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Solution

The fourth proportional to 71,731.49, 98,980.92 and 41,518.08 is: 57,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,731.49 : 98,980.92 = 41,518.08 : x
  2. Step 2: Convert to fraction form
    71,731.49/98,980.92 = 41,518.08/x
  3. Step 3: Cross multiply
    71,731.49x = 98,980.92 × 41,518.08
  4. Step 4: Simplify right side
    71,731.49x = 4,109,497,755.03
  5. Step 5: Solve for x
    x = 4,109,497,755.03/71,731.49
  6. Step 6: Final answer
    x = 57,290.01

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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.