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Finding the Fourth Proportional to 207,576.60, 311,364.90 and 198,475.80

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Solution

The fourth proportional to 207,576.60, 311,364.90 and 198,475.80 is: 297,713.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,576.60 : 311,364.90 = 198,475.80 : x
  2. Step 2: Convert to fraction form
    207,576.60/311,364.90 = 198,475.80/x
  3. Step 3: Cross multiply
    207,576.60x = 311,364.90 × 198,475.80
  4. Step 4: Simplify right side
    207,576.60x = 61,798,397,619.42
  5. Step 5: Solve for x
    x = 61,798,397,619.42/207,576.60
  6. Step 6: Final answer
    x = 297,713.70

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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.