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Finding the Fourth Proportional to 21,775.94, 30,051.12 and 12,217.94

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Solution

The fourth proportional to 21,775.94, 30,051.12 and 12,217.94 is: 16,860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.94 : 30,051.12 = 12,217.94 : x
  2. Step 2: Convert to fraction form
    21,775.94/30,051.12 = 12,217.94/x
  3. Step 3: Cross multiply
    21,775.94x = 30,051.12 × 12,217.94
  4. Step 4: Simplify right side
    21,775.94x = 367,162,630.84
  5. Step 5: Solve for x
    x = 367,162,630.84/21,775.94
  6. Step 6: Final answer
    x = 16,860.94

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.