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Finding the Fourth Proportional to 411,920.80, 618,226.80 and 201,738.40

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Solution

The fourth proportional to 411,920.80, 618,226.80 and 201,738.40 is: 302,776.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,920.80 : 618,226.80 = 201,738.40 : x
  2. Step 2: Convert to fraction form
    411,920.80/618,226.80 = 201,738.40/x
  3. Step 3: Cross multiply
    411,920.80x = 618,226.80 × 201,738.40
  4. Step 4: Simplify right side
    411,920.80x = 124,720,085,469.12
  5. Step 5: Solve for x
    x = 124,720,085,469.12/411,920.80
  6. Step 6: Final answer
    x = 302,776.86

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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.