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Finding the Fourth Proportional to 407,071.98, 561,669.39 and 234,953.28

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Solution

The fourth proportional to 407,071.98, 561,669.39 and 234,953.28 is: 324,183.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,071.98 : 561,669.39 = 234,953.28 : x
  2. Step 2: Convert to fraction form
    407,071.98/561,669.39 = 234,953.28/x
  3. Step 3: Cross multiply
    407,071.98x = 561,669.39 × 234,953.28
  4. Step 4: Simplify right side
    407,071.98x = 131,966,065,456.10
  5. Step 5: Solve for x
    x = 131,966,065,456.10/407,071.98
  6. Step 6: Final answer
    x = 324,183.61

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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.