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Finding the Fourth Proportional to 71,805.20, 107,712.60 and 24,419.60

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Solution

The fourth proportional to 71,805.20, 107,712.60 and 24,419.60 is: 36,631.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,805.20 : 107,712.60 = 24,419.60 : x
  2. Step 2: Convert to fraction form
    71,805.20/107,712.60 = 24,419.60/x
  3. Step 3: Cross multiply
    71,805.20x = 107,712.60 × 24,419.60
  4. Step 4: Simplify right side
    71,805.20x = 2,630,298,606.96
  5. Step 5: Solve for x
    x = 2,630,298,606.96/71,805.20
  6. Step 6: Final answer
    x = 36,631.03

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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.