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Finding the Fourth Proportional to 17,596.56, 26,371.84 and 13,421.28

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Solution

The fourth proportional to 17,596.56, 26,371.84 and 13,421.28 is: 20,114.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,596.56 : 26,371.84 = 13,421.28 : x
  2. Step 2: Convert to fraction form
    17,596.56/26,371.84 = 13,421.28/x
  3. Step 3: Cross multiply
    17,596.56x = 26,371.84 × 13,421.28
  4. Step 4: Simplify right side
    17,596.56x = 353,943,848.76
  5. Step 5: Solve for x
    x = 353,943,848.76/17,596.56
  6. Step 6: Final answer
    x = 20,114.38

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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.