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Finding the Fourth Proportional to 11,876.91, 17,805.49 and 4,477.29

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Solution

The fourth proportional to 11,876.91, 17,805.49 and 4,477.29 is: 6,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.91 : 17,805.49 = 4,477.29 : x
  2. Step 2: Convert to fraction form
    11,876.91/17,805.49 = 4,477.29/x
  3. Step 3: Cross multiply
    11,876.91x = 17,805.49 × 4,477.29
  4. Step 4: Simplify right side
    11,876.91x = 79,720,342.32
  5. Step 5: Solve for x
    x = 79,720,342.32/11,876.91
  6. Step 6: Final answer
    x = 6,712.21

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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.