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Finding the Fourth Proportional to 316,611.11, 436,922.61 and 173,369.90

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Solution

The fourth proportional to 316,611.11, 436,922.61 and 173,369.90 is: 239,250.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,611.11 : 436,922.61 = 173,369.90 : x
  2. Step 2: Convert to fraction form
    316,611.11/436,922.61 = 173,369.90/x
  3. Step 3: Cross multiply
    316,611.11x = 436,922.61 × 173,369.90
  4. Step 4: Simplify right side
    316,611.11x = 75,749,229,645.61
  5. Step 5: Solve for x
    x = 75,749,229,645.61/316,611.11
  6. Step 6: Final answer
    x = 239,250.07

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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.