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Finding the Fourth Proportional to 211,274.43, 316,844.75 and 69,086.86

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Solution

The fourth proportional to 211,274.43, 316,844.75 and 69,086.86 is: 103,608.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,274.43 : 316,844.75 = 69,086.86 : x
  2. Step 2: Convert to fraction form
    211,274.43/316,844.75 = 69,086.86/x
  3. Step 3: Cross multiply
    211,274.43x = 316,844.75 × 69,086.86
  4. Step 4: Simplify right side
    211,274.43x = 21,889,807,876.98
  5. Step 5: Solve for x
    x = 21,889,807,876.98/211,274.43
  6. Step 6: Final answer
    x = 103,608.41

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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.