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Finding the Fourth Proportional to 17,129.85, 25,698.93 and 5,443.11

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Solution

The fourth proportional to 17,129.85, 25,698.93 and 5,443.11 is: 8,165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,129.85 : 25,698.93 = 5,443.11 : x
  2. Step 2: Convert to fraction form
    17,129.85/25,698.93 = 5,443.11/x
  3. Step 3: Cross multiply
    17,129.85x = 25,698.93 × 5,443.11
  4. Step 4: Simplify right side
    17,129.85x = 139,882,102.87
  5. Step 5: Solve for x
    x = 139,882,102.87/17,129.85
  6. Step 6: Final answer
    x = 8,165.99

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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.