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Finding the Fourth Proportional to 316,991.19, 437,492.67 and 196,171.41

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Solution

The fourth proportional to 316,991.19, 437,492.67 and 196,171.41 is: 270,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,991.19 : 437,492.67 = 196,171.41 : x
  2. Step 2: Convert to fraction form
    316,991.19/437,492.67 = 196,171.41/x
  3. Step 3: Cross multiply
    316,991.19x = 437,492.67 × 196,171.41
  4. Step 4: Simplify right side
    316,991.19x = 85,823,553,938.56
  5. Step 5: Solve for x
    x = 85,823,553,938.56/316,991.19
  6. Step 6: Final answer
    x = 270,744.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.