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Finding the Fourth Proportional to 92,019.64, 138,029.27 and 28,844.62

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Solution

The fourth proportional to 92,019.64, 138,029.27 and 28,844.62 is: 43,266.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,019.64 : 138,029.27 = 28,844.62 : x
  2. Step 2: Convert to fraction form
    92,019.64/138,029.27 = 28,844.62/x
  3. Step 3: Cross multiply
    92,019.64x = 138,029.27 × 28,844.62
  4. Step 4: Simplify right side
    92,019.64x = 3,981,401,842.03
  5. Step 5: Solve for x
    x = 3,981,401,842.03/92,019.64
  6. Step 6: Final answer
    x = 43,266.87

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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.