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Finding the Fourth Proportional to 316,187.89, 436,334.53 and 188,838.88

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Solution

The fourth proportional to 316,187.89, 436,334.53 and 188,838.88 is: 260,594.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,187.89 : 436,334.53 = 188,838.88 : x
  2. Step 2: Convert to fraction form
    316,187.89/436,334.53 = 188,838.88/x
  3. Step 3: Cross multiply
    316,187.89x = 436,334.53 × 188,838.88
  4. Step 4: Simplify right side
    316,187.89x = 82,396,923,950.53
  5. Step 5: Solve for x
    x = 82,396,923,950.53/316,187.89
  6. Step 6: Final answer
    x = 260,594.81

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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.