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Finding the Fourth Proportional to 71,569.82, 98,763.36 and 39,736.82

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Solution

The fourth proportional to 71,569.82, 98,763.36 and 39,736.82 is: 54,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,569.82 : 98,763.36 = 39,736.82 : x
  2. Step 2: Convert to fraction form
    71,569.82/98,763.36 = 39,736.82/x
  3. Step 3: Cross multiply
    71,569.82x = 98,763.36 × 39,736.82
  4. Step 4: Simplify right side
    71,569.82x = 3,924,541,858.92
  5. Step 5: Solve for x
    x = 3,924,541,858.92/71,569.82
  6. Step 6: Final answer
    x = 54,835.15

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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.