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Finding the Fourth Proportional to 18,605.52, 28,032.40 and 16,828.64

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Solution

The fourth proportional to 18,605.52, 28,032.40 and 16,828.64 is: 25,355.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.52 : 28,032.40 = 16,828.64 : x
  2. Step 2: Convert to fraction form
    18,605.52/28,032.40 = 16,828.64/x
  3. Step 3: Cross multiply
    18,605.52x = 28,032.40 × 16,828.64
  4. Step 4: Simplify right side
    18,605.52x = 471,747,122.42
  5. Step 5: Solve for x
    x = 471,747,122.42/18,605.52
  6. Step 6: Final answer
    x = 25,355.22

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.