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Finding the Fourth Proportional to 172,276.72, 258,394.52 and 45,926.44

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Solution

The fourth proportional to 172,276.72, 258,394.52 and 45,926.44 is: 68,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,276.72 : 258,394.52 = 45,926.44 : x
  2. Step 2: Convert to fraction form
    172,276.72/258,394.52 = 45,926.44/x
  3. Step 3: Cross multiply
    172,276.72x = 258,394.52 × 45,926.44
  4. Step 4: Simplify right side
    172,276.72x = 11,867,140,189.48
  5. Step 5: Solve for x
    x = 11,867,140,189.48/172,276.72
  6. Step 6: Final answer
    x = 68,884.18

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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.