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Finding the Fourth Proportional to 168,715.91, 253,078.43 and 73,897.31

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Solution

The fourth proportional to 168,715.91, 253,078.43 and 73,897.31 is: 110,847.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,715.91 : 253,078.43 = 73,897.31 : x
  2. Step 2: Convert to fraction form
    168,715.91/253,078.43 = 73,897.31/x
  3. Step 3: Cross multiply
    168,715.91x = 253,078.43 × 73,897.31
  4. Step 4: Simplify right side
    168,715.91x = 18,701,815,459.23
  5. Step 5: Solve for x
    x = 18,701,815,459.23/168,715.91
  6. Step 6: Final answer
    x = 110,847.96

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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.