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Finding the Fourth Proportional to 17,051.60, 25,519.80 and 15,669.20

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Solution

The fourth proportional to 17,051.60, 25,519.80 and 15,669.20 is: 23,450.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,051.60 : 25,519.80 = 15,669.20 : x
  2. Step 2: Convert to fraction form
    17,051.60/25,519.80 = 15,669.20/x
  3. Step 3: Cross multiply
    17,051.60x = 25,519.80 × 15,669.20
  4. Step 4: Simplify right side
    17,051.60x = 399,874,850.16
  5. Step 5: Solve for x
    x = 399,874,850.16/17,051.60
  6. Step 6: Final answer
    x = 23,450.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.