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Finding the Fourth Proportional to 11,808.70, 17,713.02 and 3,042.88

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Solution

The fourth proportional to 11,808.70, 17,713.02 and 3,042.88 is: 4,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808.70 : 17,713.02 = 3,042.88 : x
  2. Step 2: Convert to fraction form
    11,808.70/17,713.02 = 3,042.88/x
  3. Step 3: Cross multiply
    11,808.70x = 17,713.02 × 3,042.88
  4. Step 4: Simplify right side
    11,808.70x = 53,898,594.30
  5. Step 5: Solve for x
    x = 53,898,594.30/11,808.70
  6. Step 6: Final answer
    x = 4,564.31

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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.