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Finding the Fourth Proportional to 17,788.84, 26,700.54 and 8,561.32

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Solution

The fourth proportional to 17,788.84, 26,700.54 and 8,561.32 is: 12,850.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,788.84 : 26,700.54 = 8,561.32 : x
  2. Step 2: Convert to fraction form
    17,788.84/26,700.54 = 8,561.32/x
  3. Step 3: Cross multiply
    17,788.84x = 26,700.54 × 8,561.32
  4. Step 4: Simplify right side
    17,788.84x = 228,591,867.11
  5. Step 5: Solve for x
    x = 228,591,867.11/17,788.84
  6. Step 6: Final answer
    x = 12,850.30

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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.