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Finding the Fourth Proportional to 131,181.20, 197,209.20 and 111,935.60

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Solution

The fourth proportional to 131,181.20, 197,209.20 and 111,935.60 is: 168,276.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,181.20 : 197,209.20 = 111,935.60 : x
  2. Step 2: Convert to fraction form
    131,181.20/197,209.20 = 111,935.60/x
  3. Step 3: Cross multiply
    131,181.20x = 197,209.20 × 111,935.60
  4. Step 4: Simplify right side
    131,181.20x = 22,074,730,127.52
  5. Step 5: Solve for x
    x = 22,074,730,127.52/131,181.20
  6. Step 6: Final answer
    x = 168,276.63

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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.