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Finding the Fourth Proportional to 67,819.72, 101,711.10 and 28,370.44

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Solution

The fourth proportional to 67,819.72, 101,711.10 and 28,370.44 is: 42,547.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,819.72 : 101,711.10 = 28,370.44 : x
  2. Step 2: Convert to fraction form
    67,819.72/101,711.10 = 28,370.44/x
  3. Step 3: Cross multiply
    67,819.72x = 101,711.10 × 28,370.44
  4. Step 4: Simplify right side
    67,819.72x = 2,885,588,659.88
  5. Step 5: Solve for x
    x = 2,885,588,659.88/67,819.72
  6. Step 6: Final answer
    x = 42,547.93

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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.