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Finding the Fourth Proportional to 17,892.60, 26,821.33 and 8,530.11

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Solution

The fourth proportional to 17,892.60, 26,821.33 and 8,530.11 is: 12,786.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,892.60 : 26,821.33 = 8,530.11 : x
  2. Step 2: Convert to fraction form
    17,892.60/26,821.33 = 8,530.11/x
  3. Step 3: Cross multiply
    17,892.60x = 26,821.33 × 8,530.11
  4. Step 4: Simplify right side
    17,892.60x = 228,788,873.92
  5. Step 5: Solve for x
    x = 228,788,873.92/17,892.60
  6. Step 6: Final answer
    x = 12,786.79

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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.