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Finding the Fourth Proportional to 411,250.80, 616,876.20 and 317,823.60

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Solution

The fourth proportional to 411,250.80, 616,876.20 and 317,823.60 is: 476,735.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,250.80 : 616,876.20 = 317,823.60 : x
  2. Step 2: Convert to fraction form
    411,250.80/616,876.20 = 317,823.60/x
  3. Step 3: Cross multiply
    411,250.80x = 616,876.20 × 317,823.60
  4. Step 4: Simplify right side
    411,250.80x = 196,057,814,638.32
  5. Step 5: Solve for x
    x = 196,057,814,638.32/411,250.80
  6. Step 6: Final answer
    x = 476,735.40

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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.