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Finding the Fourth Proportional to 171,433.39, 257,129.61 and 45,083.48

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Solution

The fourth proportional to 171,433.39, 257,129.61 and 45,083.48 is: 67,619.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,433.39 : 257,129.61 = 45,083.48 : x
  2. Step 2: Convert to fraction form
    171,433.39/257,129.61 = 45,083.48/x
  3. Step 3: Cross multiply
    171,433.39x = 257,129.61 × 45,083.48
  4. Step 4: Simplify right side
    171,433.39x = 11,592,297,629.84
  5. Step 5: Solve for x
    x = 11,592,297,629.84/171,433.39
  6. Step 6: Final answer
    x = 67,619.84

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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.