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Finding the Fourth Proportional to 171,996.31, 257,895.14 and 66,692.26

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Solution

The fourth proportional to 171,996.31, 257,895.14 and 66,692.26 is: 99,999.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,996.31 : 257,895.14 = 66,692.26 : x
  2. Step 2: Convert to fraction form
    171,996.31/257,895.14 = 66,692.26/x
  3. Step 3: Cross multiply
    171,996.31x = 257,895.14 × 66,692.26
  4. Step 4: Simplify right side
    171,996.31x = 17,199,610,093.67
  5. Step 5: Solve for x
    x = 17,199,610,093.67/171,996.31
  6. Step 6: Final answer
    x = 99,999.88

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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.