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Finding the Fourth Proportional to 655,861.66, 984,353.25 and 256,782.69

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Solution

The fourth proportional to 655,861.66, 984,353.25 and 256,782.69 is: 385,393.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,861.66 : 984,353.25 = 256,782.69 : x
  2. Step 2: Convert to fraction form
    655,861.66/984,353.25 = 256,782.69/x
  3. Step 3: Cross multiply
    655,861.66x = 984,353.25 × 256,782.69
  4. Step 4: Simplify right side
    655,861.66x = 252,764,875,445.24
  5. Step 5: Solve for x
    x = 252,764,875,445.24/655,861.66
  6. Step 6: Final answer
    x = 385,393.58

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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.