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Finding the Fourth Proportional to 656,867.80, 984,912.90 and 341,939.80

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Solution

The fourth proportional to 656,867.80, 984,912.90 and 341,939.80 is: 512,707.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,867.80 : 984,912.90 = 341,939.80 : x
  2. Step 2: Convert to fraction form
    656,867.80/984,912.90 = 341,939.80/x
  3. Step 3: Cross multiply
    656,867.80x = 984,912.90 × 341,939.80
  4. Step 4: Simplify right side
    656,867.80x = 336,780,920,043.42
  5. Step 5: Solve for x
    x = 336,780,920,043.42/656,867.80
  6. Step 6: Final answer
    x = 512,707.31

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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.