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Finding the Fourth Proportional to 22,457.57, 30,991.68 and 12,386.43

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Solution

The fourth proportional to 22,457.57, 30,991.68 and 12,386.43 is: 17,093.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,457.57 : 30,991.68 = 12,386.43 : x
  2. Step 2: Convert to fraction form
    22,457.57/30,991.68 = 12,386.43/x
  3. Step 3: Cross multiply
    22,457.57x = 30,991.68 × 12,386.43
  4. Step 4: Simplify right side
    22,457.57x = 383,876,274.90
  5. Step 5: Solve for x
    x = 383,876,274.90/22,457.57
  6. Step 6: Final answer
    x = 17,093.41

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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.