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Finding the Fourth Proportional to 22,558.66, 31,126.64 and 12,486.64

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Solution

The fourth proportional to 22,558.66, 31,126.64 and 12,486.64 is: 17,229.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,558.66 : 31,126.64 = 12,486.64 : x
  2. Step 2: Convert to fraction form
    22,558.66/31,126.64 = 12,486.64/x
  3. Step 3: Cross multiply
    22,558.66x = 31,126.64 × 12,486.64
  4. Step 4: Simplify right side
    22,558.66x = 388,667,148.09
  5. Step 5: Solve for x
    x = 388,667,148.09/22,558.66
  6. Step 6: Final answer
    x = 17,229.18

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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.