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Finding the Fourth Proportional to 71,992.61, 108,009.64 and 22,080.03

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Solution

The fourth proportional to 71,992.61, 108,009.64 and 22,080.03 is: 33,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,992.61 : 108,009.64 = 22,080.03 : x
  2. Step 2: Convert to fraction form
    71,992.61/108,009.64 = 22,080.03/x
  3. Step 3: Cross multiply
    71,992.61x = 108,009.64 × 22,080.03
  4. Step 4: Simplify right side
    71,992.61x = 2,384,855,714.05
  5. Step 5: Solve for x
    x = 2,384,855,714.05/71,992.61
  6. Step 6: Final answer
    x = 33,126.40

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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.