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Finding the Fourth Proportional to 171,506.97, 257,348.25 and 81,651.33

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Solution

The fourth proportional to 171,506.97, 257,348.25 and 81,651.33 is: 122,518.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,506.97 : 257,348.25 = 81,651.33 : x
  2. Step 2: Convert to fraction form
    171,506.97/257,348.25 = 81,651.33/x
  3. Step 3: Cross multiply
    171,506.97x = 257,348.25 × 81,651.33
  4. Step 4: Simplify right side
    171,506.97x = 21,012,826,885.67
  5. Step 5: Solve for x
    x = 21,012,826,885.67/171,506.97
  6. Step 6: Final answer
    x = 122,518.79

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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.