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Finding the Fourth Proportional to 66,742.44, 92,095.47 and 39,879.27

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Solution

The fourth proportional to 66,742.44, 92,095.47 and 39,879.27 is: 55,027.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,742.44 : 92,095.47 = 39,879.27 : x
  2. Step 2: Convert to fraction form
    66,742.44/92,095.47 = 39,879.27/x
  3. Step 3: Cross multiply
    66,742.44x = 92,095.47 × 39,879.27
  4. Step 4: Simplify right side
    66,742.44x = 3,672,700,113.91
  5. Step 5: Solve for x
    x = 3,672,700,113.91/66,742.44
  6. Step 6: Final answer
    x = 55,027.96

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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.