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Finding the Fourth Proportional to 56,891.72, 78,491.84 and 36,760.45

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Solution

The fourth proportional to 56,891.72, 78,491.84 and 36,760.45 is: 50,717.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,891.72 : 78,491.84 = 36,760.45 : x
  2. Step 2: Convert to fraction form
    56,891.72/78,491.84 = 36,760.45/x
  3. Step 3: Cross multiply
    56,891.72x = 78,491.84 × 36,760.45
  4. Step 4: Simplify right side
    56,891.72x = 2,885,394,979.70
  5. Step 5: Solve for x
    x = 2,885,394,979.70/56,891.72
  6. Step 6: Final answer
    x = 50,717.31

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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.