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Finding the Fourth Proportional to 171,930.88, 257,560.84 and 112,586.64

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Solution

The fourth proportional to 171,930.88, 257,560.84 and 112,586.64 is: 168,660.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,930.88 : 257,560.84 = 112,586.64 : x
  2. Step 2: Convert to fraction form
    171,930.88/257,560.84 = 112,586.64/x
  3. Step 3: Cross multiply
    171,930.88x = 257,560.84 × 112,586.64
  4. Step 4: Simplify right side
    171,930.88x = 28,997,909,571.18
  5. Step 5: Solve for x
    x = 28,997,909,571.18/171,930.88
  6. Step 6: Final answer
    x = 168,660.28

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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.