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Finding the Fourth Proportional to 19,805.52, 29,619.96 and 17,968.08

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Solution

The fourth proportional to 19,805.52, 29,619.96 and 17,968.08 is: 26,871.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.52 : 29,619.96 = 17,968.08 : x
  2. Step 2: Convert to fraction form
    19,805.52/29,619.96 = 17,968.08/x
  3. Step 3: Cross multiply
    19,805.52x = 29,619.96 × 17,968.08
  4. Step 4: Simplify right side
    19,805.52x = 532,213,810.88
  5. Step 5: Solve for x
    x = 532,213,810.88/19,805.52
  6. Step 6: Final answer
    x = 26,871.99

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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.