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Finding the Fourth Proportional to 618,636.80, 928,246.80 and 461,172.80

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Solution

The fourth proportional to 618,636.80, 928,246.80 and 461,172.80 is: 691,976.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,636.80 : 928,246.80 = 461,172.80 : x
  2. Step 2: Convert to fraction form
    618,636.80/928,246.80 = 461,172.80/x
  3. Step 3: Cross multiply
    618,636.80x = 928,246.80 × 461,172.80
  4. Step 4: Simplify right side
    618,636.80x = 428,082,175,847.04
  5. Step 5: Solve for x
    x = 428,082,175,847.04/618,636.80
  6. Step 6: Final answer
    x = 691,976.58

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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.