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Finding the Fourth Proportional to 61,879.72, 85,390.14 and 35,027.68

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Solution

The fourth proportional to 61,879.72, 85,390.14 and 35,027.68 is: 48,336.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,879.72 : 85,390.14 = 35,027.68 : x
  2. Step 2: Convert to fraction form
    61,879.72/85,390.14 = 35,027.68/x
  3. Step 3: Cross multiply
    61,879.72x = 85,390.14 × 35,027.68
  4. Step 4: Simplify right side
    61,879.72x = 2,991,018,499.08
  5. Step 5: Solve for x
    x = 2,991,018,499.08/61,879.72
  6. Step 6: Final answer
    x = 48,336.01

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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.