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Finding the Fourth Proportional to 58,879.72, 81,234.66 and 36,519.40

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Solution

The fourth proportional to 58,879.72, 81,234.66 and 36,519.40 is: 50,384.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,879.72 : 81,234.66 = 36,519.40 : x
  2. Step 2: Convert to fraction form
    58,879.72/81,234.66 = 36,519.40/x
  3. Step 3: Cross multiply
    58,879.72x = 81,234.66 × 36,519.40
  4. Step 4: Simplify right side
    58,879.72x = 2,966,641,042.40
  5. Step 5: Solve for x
    x = 2,966,641,042.40/58,879.72
  6. Step 6: Final answer
    x = 50,384.77

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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.