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Finding the Fourth Proportional to 140,940.76, 211,310.70 and 66,020.03

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Solution

The fourth proportional to 140,940.76, 211,310.70 and 66,020.03 is: 98,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,940.76 : 211,310.70 = 66,020.03 : x
  2. Step 2: Convert to fraction form
    140,940.76/211,310.70 = 66,020.03/x
  3. Step 3: Cross multiply
    140,940.76x = 211,310.70 × 66,020.03
  4. Step 4: Simplify right side
    140,940.76x = 13,950,738,835.92
  5. Step 5: Solve for x
    x = 13,950,738,835.92/140,940.76
  6. Step 6: Final answer
    x = 98,983.00

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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.