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Finding the Fourth Proportional to 56,960.91, 78,605.10 and 33,087.78

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Solution

The fourth proportional to 56,960.91, 78,605.10 and 33,087.78 is: 45,660.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,960.91 : 78,605.10 = 33,087.78 : x
  2. Step 2: Convert to fraction form
    56,960.91/78,605.10 = 33,087.78/x
  3. Step 3: Cross multiply
    56,960.91x = 78,605.10 × 33,087.78
  4. Step 4: Simplify right side
    56,960.91x = 2,600,868,255.68
  5. Step 5: Solve for x
    x = 2,600,868,255.68/56,960.91
  6. Step 6: Final answer
    x = 45,660.58

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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.