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Finding the Fourth Proportional to 411,015.80, 616,523.70 and 200,545.40

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Solution

The fourth proportional to 411,015.80, 616,523.70 and 200,545.40 is: 300,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,015.80 : 616,523.70 = 200,545.40 : x
  2. Step 2: Convert to fraction form
    411,015.80/616,523.70 = 200,545.40/x
  3. Step 3: Cross multiply
    411,015.80x = 616,523.70 × 200,545.40
  4. Step 4: Simplify right side
    411,015.80x = 123,640,992,025.98
  5. Step 5: Solve for x
    x = 123,640,992,025.98/411,015.80
  6. Step 6: Final answer
    x = 300,818.10

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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.