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Finding the Fourth Proportional to 92,642.28, 138,996.90 and 36,451.44

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Solution

The fourth proportional to 92,642.28, 138,996.90 and 36,451.44 is: 54,690.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,642.28 : 138,996.90 = 36,451.44 : x
  2. Step 2: Convert to fraction form
    92,642.28/138,996.90 = 36,451.44/x
  3. Step 3: Cross multiply
    92,642.28x = 138,996.90 × 36,451.44
  4. Step 4: Simplify right side
    92,642.28x = 5,066,637,160.54
  5. Step 5: Solve for x
    x = 5,066,637,160.54/92,642.28
  6. Step 6: Final answer
    x = 54,690.33

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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.