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Finding the Fourth Proportional to 71,858.54, 107,788.64 and 27,487.55

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Solution

The fourth proportional to 71,858.54, 107,788.64 and 27,487.55 is: 41,231.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,858.54 : 107,788.64 = 27,487.55 : x
  2. Step 2: Convert to fraction form
    71,858.54/107,788.64 = 27,487.55/x
  3. Step 3: Cross multiply
    71,858.54x = 107,788.64 × 27,487.55
  4. Step 4: Simplify right side
    71,858.54x = 2,962,845,763.47
  5. Step 5: Solve for x
    x = 2,962,845,763.47/71,858.54
  6. Step 6: Final answer
    x = 41,231.64

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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.