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Finding the Fourth Proportional to 73,636.68, 110,481.12 and 31,499.04

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Solution

The fourth proportional to 73,636.68, 110,481.12 and 31,499.04 is: 47,259.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,636.68 : 110,481.12 = 31,499.04 : x
  2. Step 2: Convert to fraction form
    73,636.68/110,481.12 = 31,499.04/x
  3. Step 3: Cross multiply
    73,636.68x = 110,481.12 × 31,499.04
  4. Step 4: Simplify right side
    73,636.68x = 3,480,049,218.12
  5. Step 5: Solve for x
    x = 3,480,049,218.12/73,636.68
  6. Step 6: Final answer
    x = 47,259.72

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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.