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Finding the Fourth Proportional to 411,202.80, 616,804.20 and 317,775.60

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Solution

The fourth proportional to 411,202.80, 616,804.20 and 317,775.60 is: 476,663.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,202.80 : 616,804.20 = 317,775.60 : x
  2. Step 2: Convert to fraction form
    411,202.80/616,804.20 = 317,775.60/x
  3. Step 3: Cross multiply
    411,202.80x = 616,804.20 × 317,775.60
  4. Step 4: Simplify right side
    411,202.80x = 196,005,324,737.52
  5. Step 5: Solve for x
    x = 196,005,324,737.52/411,202.80
  6. Step 6: Final answer
    x = 476,663.40

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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.