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Finding the Fourth Proportional to 73,287.44, 109,978.68 and 26,536.40

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Solution

The fourth proportional to 73,287.44, 109,978.68 and 26,536.40 is: 39,821.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,287.44 : 109,978.68 = 26,536.40 : x
  2. Step 2: Convert to fraction form
    73,287.44/109,978.68 = 26,536.40/x
  3. Step 3: Cross multiply
    73,287.44x = 109,978.68 × 26,536.40
  4. Step 4: Simplify right side
    73,287.44x = 2,918,438,243.95
  5. Step 5: Solve for x
    x = 2,918,438,243.95/73,287.44
  6. Step 6: Final answer
    x = 39,821.81

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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.