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Finding the Fourth Proportional to 32,661, 45,072.24 and 18,515.16

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Solution

The fourth proportional to 32,661, 45,072.24 and 18,515.16 is: 25,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,661 : 45,072.24 = 18,515.16 : x
  2. Step 2: Convert to fraction form
    32,661/45,072.24 = 18,515.16/x
  3. Step 3: Cross multiply
    32,661x = 45,072.24 × 18,515.16
  4. Step 4: Simplify right side
    32,661x = 834,519,735.16
  5. Step 5: Solve for x
    x = 834,519,735.16/32,661
  6. Step 6: Final answer
    x = 25,550.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.