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Finding the Fourth Proportional to 22,186.66, 30,618.84 and 12,116.04

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Solution

The fourth proportional to 22,186.66, 30,618.84 and 12,116.04 is: 16,720.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,186.66 : 30,618.84 = 12,116.04 : x
  2. Step 2: Convert to fraction form
    22,186.66/30,618.84 = 12,116.04/x
  3. Step 3: Cross multiply
    22,186.66x = 30,618.84 × 12,116.04
  4. Step 4: Simplify right side
    22,186.66x = 370,979,090.19
  5. Step 5: Solve for x
    x = 370,979,090.19/22,186.66
  6. Step 6: Final answer
    x = 16,720.82

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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.