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Finding the Fourth Proportional to 207,356.20, 311,034.30 and 165,884.20

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Solution

The fourth proportional to 207,356.20, 311,034.30 and 165,884.20 is: 248,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,356.20 : 311,034.30 = 165,884.20 : x
  2. Step 2: Convert to fraction form
    207,356.20/311,034.30 = 165,884.20/x
  3. Step 3: Cross multiply
    207,356.20x = 311,034.30 × 165,884.20
  4. Step 4: Simplify right side
    207,356.20x = 51,595,676,028.06
  5. Step 5: Solve for x
    x = 51,595,676,028.06/207,356.20
  6. Step 6: Final answer
    x = 248,826.30

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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.