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Finding the Fourth Proportional to 411,211.20, 616,816.80 and 395,464.80

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Solution

The fourth proportional to 411,211.20, 616,816.80 and 395,464.80 is: 593,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,211.20 : 616,816.80 = 395,464.80 : x
  2. Step 2: Convert to fraction form
    411,211.20/616,816.80 = 395,464.80/x
  3. Step 3: Cross multiply
    411,211.20x = 616,816.80 × 395,464.80
  4. Step 4: Simplify right side
    411,211.20x = 243,929,332,448.64
  5. Step 5: Solve for x
    x = 243,929,332,448.64/411,211.20
  6. Step 6: Final answer
    x = 593,197.20

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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.