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Finding the Fourth Proportional to 71,773.74, 107,666.10 and 21,858.08

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Solution

The fourth proportional to 71,773.74, 107,666.10 and 21,858.08 is: 32,788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,773.74 : 107,666.10 = 21,858.08 : x
  2. Step 2: Convert to fraction form
    71,773.74/107,666.10 = 21,858.08/x
  3. Step 3: Cross multiply
    71,773.74x = 107,666.10 × 21,858.08
  4. Step 4: Simplify right side
    71,773.74x = 2,353,374,227.09
  5. Step 5: Solve for x
    x = 2,353,374,227.09/71,773.74
  6. Step 6: Final answer
    x = 32,788.79

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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.