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Finding the Fourth Proportional to 141,879.86, 212,850.92 and 42,047.87

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Solution

The fourth proportional to 141,879.86, 212,850.92 and 42,047.87 is: 63,081.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,879.86 : 212,850.92 = 42,047.87 : x
  2. Step 2: Convert to fraction form
    141,879.86/212,850.92 = 42,047.87/x
  3. Step 3: Cross multiply
    141,879.86x = 212,850.92 × 42,047.87
  4. Step 4: Simplify right side
    141,879.86x = 8,949,927,813.54
  5. Step 5: Solve for x
    x = 8,949,927,813.54/141,879.86
  6. Step 6: Final answer
    x = 63,081.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.