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Finding the Fourth Proportional to 156,508.44, 215,975.82 and 92,808.12

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Solution

The fourth proportional to 156,508.44, 215,975.82 and 92,808.12 is: 128,071.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,508.44 : 215,975.82 = 92,808.12 : x
  2. Step 2: Convert to fraction form
    156,508.44/215,975.82 = 92,808.12/x
  3. Step 3: Cross multiply
    156,508.44x = 215,975.82 × 92,808.12
  4. Step 4: Simplify right side
    156,508.44x = 20,044,309,819.66
  5. Step 5: Solve for x
    x = 20,044,309,819.66/156,508.44
  6. Step 6: Final answer
    x = 128,071.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.