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Finding the Fourth Proportional to 17,459.65, 26,168.64 and 12,165.99

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Solution

The fourth proportional to 17,459.65, 26,168.64 and 12,165.99 is: 18,234.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,459.65 : 26,168.64 = 12,165.99 : x
  2. Step 2: Convert to fraction form
    17,459.65/26,168.64 = 12,165.99/x
  3. Step 3: Cross multiply
    17,459.65x = 26,168.64 × 12,165.99
  4. Step 4: Simplify right side
    17,459.65x = 318,367,281.71
  5. Step 5: Solve for x
    x = 318,367,281.71/17,459.65
  6. Step 6: Final answer
    x = 18,234.46

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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.