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Finding the Fourth Proportional to 11,807.99, 17,715.04 and 4,412.51

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Solution

The fourth proportional to 11,807.99, 17,715.04 and 4,412.51 is: 6,619.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.99 : 17,715.04 = 4,412.51 : x
  2. Step 2: Convert to fraction form
    11,807.99/17,715.04 = 4,412.51/x
  3. Step 3: Cross multiply
    11,807.99x = 17,715.04 × 4,412.51
  4. Step 4: Simplify right side
    11,807.99x = 78,167,757.98
  5. Step 5: Solve for x
    x = 78,167,757.98/11,807.99
  6. Step 6: Final answer
    x = 6,619.90

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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.