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Finding the Fourth Proportional to 171,668.80, 257,612.55 and 100,591.30

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Solution

The fourth proportional to 171,668.80, 257,612.55 and 100,591.30 is: 150,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,668.80 : 257,612.55 = 100,591.30 : x
  2. Step 2: Convert to fraction form
    171,668.80/257,612.55 = 100,591.30/x
  3. Step 3: Cross multiply
    171,668.80x = 257,612.55 × 100,591.30
  4. Step 4: Simplify right side
    171,668.80x = 25,913,581,300.82
  5. Step 5: Solve for x
    x = 25,913,581,300.82/171,668.80
  6. Step 6: Final answer
    x = 150,951.02

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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.