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Finding the Fourth Proportional to 316,498.58, 436,751.66 and 173,231.45

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Solution

The fourth proportional to 316,498.58, 436,751.66 and 173,231.45 is: 239,050.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,498.58 : 436,751.66 = 173,231.45 : x
  2. Step 2: Convert to fraction form
    316,498.58/436,751.66 = 173,231.45/x
  3. Step 3: Cross multiply
    316,498.58x = 436,751.66 × 173,231.45
  4. Step 4: Simplify right side
    316,498.58x = 75,659,123,351.71
  5. Step 5: Solve for x
    x = 75,659,123,351.71/316,498.58
  6. Step 6: Final answer
    x = 239,050.44

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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.