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Finding the Fourth Proportional to 313,268.43, 432,310.80 and 170,028.51

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Solution

The fourth proportional to 313,268.43, 432,310.80 and 170,028.51 is: 234,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,268.43 : 432,310.80 = 170,028.51 : x
  2. Step 2: Convert to fraction form
    313,268.43/432,310.80 = 170,028.51/x
  3. Step 3: Cross multiply
    313,268.43x = 432,310.80 × 170,028.51
  4. Step 4: Simplify right side
    313,268.43x = 73,505,161,180.91
  5. Step 5: Solve for x
    x = 73,505,161,180.91/313,268.43
  6. Step 6: Final answer
    x = 234,639.54

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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.