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Finding the Fourth Proportional to 171,277.83, 256,938.62 and 66,126.87

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Solution

The fourth proportional to 171,277.83, 256,938.62 and 66,126.87 is: 99,198.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,277.83 : 256,938.62 = 66,126.87 : x
  2. Step 2: Convert to fraction form
    171,277.83/256,938.62 = 66,126.87/x
  3. Step 3: Cross multiply
    171,277.83x = 256,938.62 × 66,126.87
  4. Step 4: Simplify right side
    171,277.83x = 16,990,546,392.09
  5. Step 5: Solve for x
    x = 16,990,546,392.09/171,277.83
  6. Step 6: Final answer
    x = 99,198.75

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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.