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Finding the Fourth Proportional to 26,778.59, 40,178.90 and 11,777.99

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Solution

The fourth proportional to 26,778.59, 40,178.90 and 11,777.99 is: 17,671.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,778.59 : 40,178.90 = 11,777.99 : x
  2. Step 2: Convert to fraction form
    26,778.59/40,178.90 = 11,777.99/x
  3. Step 3: Cross multiply
    26,778.59x = 40,178.90 × 11,777.99
  4. Step 4: Simplify right side
    26,778.59x = 473,226,682.41
  5. Step 5: Solve for x
    x = 473,226,682.41/26,778.59
  6. Step 6: Final answer
    x = 17,671.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.