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Finding the Fourth Proportional to 322,515.55, 484,289.70 and 256,504.60

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Solution

The fourth proportional to 322,515.55, 484,289.70 and 256,504.60 is: 385,167.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,515.55 : 484,289.70 = 256,504.60 : x
  2. Step 2: Convert to fraction form
    322,515.55/484,289.70 = 256,504.60/x
  3. Step 3: Cross multiply
    322,515.55x = 484,289.70 × 256,504.60
  4. Step 4: Simplify right side
    322,515.55x = 124,222,535,782.62
  5. Step 5: Solve for x
    x = 124,222,535,782.62/322,515.55
  6. Step 6: Final answer
    x = 385,167.59

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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.