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Finding the Fourth Proportional to 655,857.28, 984,346.68 and 256,778.30

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Solution

The fourth proportional to 655,857.28, 984,346.68 and 256,778.30 is: 385,387.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,857.28 : 984,346.68 = 256,778.30 : x
  2. Step 2: Convert to fraction form
    655,857.28/984,346.68 = 256,778.30/x
  3. Step 3: Cross multiply
    655,857.28x = 984,346.68 × 256,778.30
  4. Step 4: Simplify right side
    655,857.28x = 252,758,869,080.45
  5. Step 5: Solve for x
    x = 252,758,869,080.45/655,857.28
  6. Step 6: Final answer
    x = 385,387.00

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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.