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Finding the Fourth Proportional to 140,780.62, 211,239.33 and 61,884.64

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Solution

The fourth proportional to 140,780.62, 211,239.33 and 61,884.64 is: 92,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,780.62 : 211,239.33 = 61,884.64 : x
  2. Step 2: Convert to fraction form
    140,780.62/211,239.33 = 61,884.64/x
  3. Step 3: Cross multiply
    140,780.62x = 211,239.33 × 61,884.64
  4. Step 4: Simplify right side
    140,780.62x = 13,072,469,890.89
  5. Step 5: Solve for x
    x = 13,072,469,890.89/140,780.62
  6. Step 6: Final answer
    x = 92,857.03

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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.