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Finding the Fourth Proportional to 324,010.13, 485,965.89 and 124,424.51

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Solution

The fourth proportional to 324,010.13, 485,965.89 and 124,424.51 is: 186,617.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,010.13 : 485,965.89 = 124,424.51 : x
  2. Step 2: Convert to fraction form
    324,010.13/485,965.89 = 124,424.51/x
  3. Step 3: Cross multiply
    324,010.13x = 485,965.89 × 124,424.51
  4. Step 4: Simplify right side
    324,010.13x = 60,466,065,310.13
  5. Step 5: Solve for x
    x = 60,466,065,310.13/324,010.13
  6. Step 6: Final answer
    x = 186,617.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.