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Finding the Fourth Proportional to 438,235.56, 657,087.26 and 171,676.71

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Solution

The fourth proportional to 438,235.56, 657,087.26 and 171,676.71 is: 257,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,235.56 : 657,087.26 = 171,676.71 : x
  2. Step 2: Convert to fraction form
    438,235.56/657,087.26 = 171,676.71/x
  3. Step 3: Cross multiply
    438,235.56x = 657,087.26 × 171,676.71
  4. Step 4: Simplify right side
    438,235.56x = 112,806,578,121.33
  5. Step 5: Solve for x
    x = 112,806,578,121.33/438,235.56
  6. Step 6: Final answer
    x = 257,410.83

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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.