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Finding the Fourth Proportional to 316,986.73, 437,486.55 and 196,166.93

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Solution

The fourth proportional to 316,986.73, 437,486.55 and 196,166.93 is: 270,738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,986.73 : 437,486.55 = 196,166.93 : x
  2. Step 2: Convert to fraction form
    316,986.73/437,486.55 = 196,166.93/x
  3. Step 3: Cross multiply
    316,986.73x = 437,486.55 × 196,166.93
  4. Step 4: Simplify right side
    316,986.73x = 85,820,392,694.17
  5. Step 5: Solve for x
    x = 85,820,392,694.17/316,986.73
  6. Step 6: Final answer
    x = 270,738.12

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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.