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Finding the Fourth Proportional to 22,052.18, 30,431.48 and 11,980.40

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Solution

The fourth proportional to 22,052.18, 30,431.48 and 11,980.40 is: 16,532.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,052.18 : 30,431.48 = 11,980.40 : x
  2. Step 2: Convert to fraction form
    22,052.18/30,431.48 = 11,980.40/x
  3. Step 3: Cross multiply
    22,052.18x = 30,431.48 × 11,980.40
  4. Step 4: Simplify right side
    22,052.18x = 364,581,090.93
  5. Step 5: Solve for x
    x = 364,581,090.93/22,052.18
  6. Step 6: Final answer
    x = 16,532.66

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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.