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Finding the Fourth Proportional to 171,884.16, 257,833.22 and 81,880.59

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Solution

The fourth proportional to 171,884.16, 257,833.22 and 81,880.59 is: 122,824.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,884.16 : 257,833.22 = 81,880.59 : x
  2. Step 2: Convert to fraction form
    171,884.16/257,833.22 = 81,880.59/x
  3. Step 3: Cross multiply
    171,884.16x = 257,833.22 × 81,880.59
  4. Step 4: Simplify right side
    171,884.16x = 21,111,535,765.80
  5. Step 5: Solve for x
    x = 21,111,535,765.80/171,884.16
  6. Step 6: Final answer
    x = 122,824.21

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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.