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Finding the Fourth Proportional to 71,859.33, 98,447.75 and 69,165.80

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Solution

The fourth proportional to 71,859.33, 98,447.75 and 69,165.80 is: 94,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,859.33 : 98,447.75 = 69,165.80 : x
  2. Step 2: Convert to fraction form
    71,859.33/98,447.75 = 69,165.80/x
  3. Step 3: Cross multiply
    71,859.33x = 98,447.75 × 69,165.80
  4. Step 4: Simplify right side
    71,859.33x = 6,809,216,548.88
  5. Step 5: Solve for x
    x = 6,809,216,548.88/71,859.33
  6. Step 6: Final answer
    x = 94,757.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.