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Finding the Fourth Proportional to 71,959.88, 107,799.54 and 43,810.11

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Solution

The fourth proportional to 71,959.88, 107,799.54 and 43,810.11 is: 65,629.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959.88 : 107,799.54 = 43,810.11 : x
  2. Step 2: Convert to fraction form
    71,959.88/107,799.54 = 43,810.11/x
  3. Step 3: Cross multiply
    71,959.88x = 107,799.54 × 43,810.11
  4. Step 4: Simplify right side
    71,959.88x = 4,722,709,705.35
  5. Step 5: Solve for x
    x = 4,722,709,705.35/71,959.88
  6. Step 6: Final answer
    x = 65,629.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.