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Finding the Fourth Proportional to 56,887.80, 78,508.89 and 41,786.97

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Solution

The fourth proportional to 56,887.80, 78,508.89 and 41,786.97 is: 57,668.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,887.80 : 78,508.89 = 41,786.97 : x
  2. Step 2: Convert to fraction form
    56,887.80/78,508.89 = 41,786.97/x
  3. Step 3: Cross multiply
    56,887.80x = 78,508.89 × 41,786.97
  4. Step 4: Simplify right side
    56,887.80x = 3,280,648,631.16
  5. Step 5: Solve for x
    x = 3,280,648,631.16/56,887.80
  6. Step 6: Final answer
    x = 57,668.76

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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.