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Finding the Fourth Proportional to 657,063.90, 985,172.10 and 257,745.03

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Solution

The fourth proportional to 657,063.90, 985,172.10 and 257,745.03 is: 386,451.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,063.90 : 985,172.10 = 257,745.03 : x
  2. Step 2: Convert to fraction form
    657,063.90/985,172.10 = 257,745.03/x
  3. Step 3: Cross multiply
    657,063.90x = 985,172.10 × 257,745.03
  4. Step 4: Simplify right side
    657,063.90x = 253,923,212,469.66
  5. Step 5: Solve for x
    x = 253,923,212,469.66/657,063.90
  6. Step 6: Final answer
    x = 386,451.32

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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.