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Finding the Fourth Proportional to 22,161.70, 30,583.20 and 12,090.16

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Solution

The fourth proportional to 22,161.70, 30,583.20 and 12,090.16 is: 16,684.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.70 : 30,583.20 = 12,090.16 : x
  2. Step 2: Convert to fraction form
    22,161.70/30,583.20 = 12,090.16/x
  3. Step 3: Cross multiply
    22,161.70x = 30,583.20 × 12,090.16
  4. Step 4: Simplify right side
    22,161.70x = 369,755,781.31
  5. Step 5: Solve for x
    x = 369,755,781.31/22,161.70
  6. Step 6: Final answer
    x = 16,684.45

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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.