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Finding the Fourth Proportional to 11,593.80, 17,390.70 and 2,828.79

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Solution

The fourth proportional to 11,593.80, 17,390.70 and 2,828.79 is: 4,243.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,593.80 : 17,390.70 = 2,828.79 : x
  2. Step 2: Convert to fraction form
    11,593.80/17,390.70 = 2,828.79/x
  3. Step 3: Cross multiply
    11,593.80x = 17,390.70 × 2,828.79
  4. Step 4: Simplify right side
    11,593.80x = 49,194,638.25
  5. Step 5: Solve for x
    x = 49,194,638.25/11,593.80
  6. Step 6: Final answer
    x = 4,243.19

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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.