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Finding the Fourth Proportional to 171,433.67, 257,191.54 and 71,538.28

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Solution

The fourth proportional to 171,433.67, 257,191.54 and 71,538.28 is: 107,324.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,433.67 : 257,191.54 = 71,538.28 : x
  2. Step 2: Convert to fraction form
    171,433.67/257,191.54 = 71,538.28/x
  3. Step 3: Cross multiply
    171,433.67x = 257,191.54 × 71,538.28
  4. Step 4: Simplify right side
    171,433.67x = 18,399,039,580.33
  5. Step 5: Solve for x
    x = 18,399,039,580.33/171,433.67
  6. Step 6: Final answer
    x = 107,324.54

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1.5x scale

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.