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Finding the Fourth Proportional to 140,663.92, 210,941.20 and 50,682.64

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Solution

The fourth proportional to 140,663.92, 210,941.20 and 50,682.64 is: 76,004.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,663.92 : 210,941.20 = 50,682.64 : x
  2. Step 2: Convert to fraction form
    140,663.92/210,941.20 = 50,682.64/x
  3. Step 3: Cross multiply
    140,663.92x = 210,941.20 × 50,682.64
  4. Step 4: Simplify right side
    140,663.92x = 10,691,056,900.77
  5. Step 5: Solve for x
    x = 10,691,056,900.77/140,663.92
  6. Step 6: Final answer
    x = 76,004.26

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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.