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Finding the Fourth Proportional to 56,876.85, 78,531.66 and 36,745.65

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Solution

The fourth proportional to 56,876.85, 78,531.66 and 36,745.65 is: 50,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,876.85 : 78,531.66 = 36,745.65 : x
  2. Step 2: Convert to fraction form
    56,876.85/78,531.66 = 36,745.65/x
  3. Step 3: Cross multiply
    56,876.85x = 78,531.66 × 36,745.65
  4. Step 4: Simplify right side
    56,876.85x = 2,885,696,892.28
  5. Step 5: Solve for x
    x = 2,885,696,892.28/56,876.85
  6. Step 6: Final answer
    x = 50,735.88

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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.