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Finding the Fourth Proportional to 196,612.60, 295,137.60 and 121,817.20

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Solution

The fourth proportional to 196,612.60, 295,137.60 and 121,817.20 is: 182,861.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,612.60 : 295,137.60 = 121,817.20 : x
  2. Step 2: Convert to fraction form
    196,612.60/295,137.60 = 121,817.20/x
  3. Step 3: Cross multiply
    196,612.60x = 295,137.60 × 121,817.20
  4. Step 4: Simplify right side
    196,612.60x = 35,952,836,046.72
  5. Step 5: Solve for x
    x = 35,952,836,046.72/196,612.60
  6. Step 6: Final answer
    x = 182,861.30

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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.