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Finding the Fourth Proportional to 140,803.36, 211,218.90 and 40,964.56

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Solution

The fourth proportional to 140,803.36, 211,218.90 and 40,964.56 is: 61,450.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,803.36 : 211,218.90 = 40,964.56 : x
  2. Step 2: Convert to fraction form
    140,803.36/211,218.90 = 40,964.56/x
  3. Step 3: Cross multiply
    140,803.36x = 211,218.90 × 40,964.56
  4. Step 4: Simplify right side
    140,803.36x = 8,652,489,302.18
  5. Step 5: Solve for x
    x = 8,652,489,302.18/140,803.36
  6. Step 6: Final answer
    x = 61,450.87

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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.