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Finding the Fourth Proportional to 316,999.87, 437,504.67 and 196,180.12

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Solution

The fourth proportional to 316,999.87, 437,504.67 and 196,180.12 is: 270,756.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,999.87 : 437,504.67 = 196,180.12 : x
  2. Step 2: Convert to fraction form
    316,999.87/437,504.67 = 196,180.12/x
  3. Step 3: Cross multiply
    316,999.87x = 437,504.67 × 196,180.12
  4. Step 4: Simplify right side
    316,999.87x = 85,829,718,661.16
  5. Step 5: Solve for x
    x = 85,829,718,661.16/316,999.87
  6. Step 6: Final answer
    x = 270,756.32

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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.