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Finding the Fourth Proportional to 210,960.90, 316,474.20 and 68,773.14

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Solution

The fourth proportional to 210,960.90, 316,474.20 and 68,773.14 is: 103,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,960.90 : 316,474.20 = 68,773.14 : x
  2. Step 2: Convert to fraction form
    210,960.90/316,474.20 = 68,773.14/x
  3. Step 3: Cross multiply
    210,960.90x = 316,474.20 × 68,773.14
  4. Step 4: Simplify right side
    210,960.90x = 21,764,924,462.99
  5. Step 5: Solve for x
    x = 21,764,924,462.99/210,960.90
  6. Step 6: Final answer
    x = 103,170.42

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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.