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Finding the Fourth Proportional to 73,987.66, 110,984.73 and 21,402.46

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Solution

The fourth proportional to 73,987.66, 110,984.73 and 21,402.46 is: 32,104.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,987.66 : 110,984.73 = 21,402.46 : x
  2. Step 2: Convert to fraction form
    73,987.66/110,984.73 = 21,402.46/x
  3. Step 3: Cross multiply
    73,987.66x = 110,984.73 × 21,402.46
  4. Step 4: Simplify right side
    73,987.66x = 2,375,346,244.44
  5. Step 5: Solve for x
    x = 2,375,346,244.44/73,987.66
  6. Step 6: Final answer
    x = 32,104.63

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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.