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Finding the Fourth Proportional to 61,143.96, 84,379.59 and 33,919.86

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Solution

The fourth proportional to 61,143.96, 84,379.59 and 33,919.86 is: 46,809.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,143.96 : 84,379.59 = 33,919.86 : x
  2. Step 2: Convert to fraction form
    61,143.96/84,379.59 = 33,919.86/x
  3. Step 3: Cross multiply
    61,143.96x = 84,379.59 × 33,919.86
  4. Step 4: Simplify right side
    61,143.96x = 2,862,143,879.66
  5. Step 5: Solve for x
    x = 2,862,143,879.66/61,143.96
  6. Step 6: Final answer
    x = 46,809.92

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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.