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Finding the Fourth Proportional to 267,892.60, 401,838.90 and 80,879.80

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Solution

The fourth proportional to 267,892.60, 401,838.90 and 80,879.80 is: 121,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,892.60 : 401,838.90 = 80,879.80 : x
  2. Step 2: Convert to fraction form
    267,892.60/401,838.90 = 80,879.80/x
  3. Step 3: Cross multiply
    267,892.60x = 401,838.90 × 80,879.80
  4. Step 4: Simplify right side
    267,892.60x = 32,500,649,864.22
  5. Step 5: Solve for x
    x = 32,500,649,864.22/267,892.60
  6. Step 6: Final answer
    x = 121,319.70

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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.