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Finding the Fourth Proportional to 207,917.60, 311,876.40 and 186,922.40

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Solution

The fourth proportional to 207,917.60, 311,876.40 and 186,922.40 is: 280,383.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,917.60 : 311,876.40 = 186,922.40 : x
  2. Step 2: Convert to fraction form
    207,917.60/311,876.40 = 186,922.40/x
  3. Step 3: Cross multiply
    207,917.60x = 311,876.40 × 186,922.40
  4. Step 4: Simplify right side
    207,917.60x = 58,296,685,191.36
  5. Step 5: Solve for x
    x = 58,296,685,191.36/207,917.60
  6. Step 6: Final answer
    x = 280,383.60

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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.