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Finding the Fourth Proportional to 140,981.80, 211,471.26 and 47,486.92

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Solution

The fourth proportional to 140,981.80, 211,471.26 and 47,486.92 is: 71,229.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,981.80 : 211,471.26 = 47,486.92 : x
  2. Step 2: Convert to fraction form
    140,981.80/211,471.26 = 47,486.92/x
  3. Step 3: Cross multiply
    140,981.80x = 211,471.26 × 47,486.92
  4. Step 4: Simplify right side
    140,981.80x = 10,042,118,805.92
  5. Step 5: Solve for x
    x = 10,042,118,805.92/140,981.80
  6. Step 6: Final answer
    x = 71,229.89

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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.