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Finding the Fourth Proportional to 411,252.80, 616,879.20 and 317,825.60

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Solution

The fourth proportional to 411,252.80, 616,879.20 and 317,825.60 is: 476,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,252.80 : 616,879.20 = 317,825.60 : x
  2. Step 2: Convert to fraction form
    411,252.80/616,879.20 = 317,825.60/x
  3. Step 3: Cross multiply
    411,252.80x = 616,879.20 × 317,825.60
  4. Step 4: Simplify right side
    411,252.80x = 196,060,001,867.52
  5. Step 5: Solve for x
    x = 196,060,001,867.52/411,252.80
  6. Step 6: Final answer
    x = 476,738.40

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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.