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Finding the Fourth Proportional to 283,858.29, 391,721.31 and 154,796.36

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Solution

The fourth proportional to 283,858.29, 391,721.31 and 154,796.36 is: 213,617.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,858.29 : 391,721.31 = 154,796.36 : x
  2. Step 2: Convert to fraction form
    283,858.29/391,721.31 = 154,796.36/x
  3. Step 3: Cross multiply
    283,858.29x = 391,721.31 × 154,796.36
  4. Step 4: Simplify right side
    283,858.29x = 60,637,030,963.83
  5. Step 5: Solve for x
    x = 60,637,030,963.83/283,858.29
  6. Step 6: Final answer
    x = 213,617.26

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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.