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Finding the Fourth Proportional to 18,606.71, 28,034.17 and 16,829.82

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Solution

The fourth proportional to 18,606.71, 28,034.17 and 16,829.82 is: 25,356.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,606.71 : 28,034.17 = 16,829.82 : x
  2. Step 2: Convert to fraction form
    18,606.71/28,034.17 = 16,829.82/x
  3. Step 3: Cross multiply
    18,606.71x = 28,034.17 × 16,829.82
  4. Step 4: Simplify right side
    18,606.71x = 471,809,992.87
  5. Step 5: Solve for x
    x = 471,809,992.87/18,606.71
  6. Step 6: Final answer
    x = 25,356.99

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Why These Related Problems?

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