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Finding the Fourth Proportional to 617,435.86, 851,244.69 and 445,209.70

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Solution

The fourth proportional to 617,435.86, 851,244.69 and 445,209.70 is: 613,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,435.86 : 851,244.69 = 445,209.70 : x
  2. Step 2: Convert to fraction form
    617,435.86/851,244.69 = 445,209.70/x
  3. Step 3: Cross multiply
    617,435.86x = 851,244.69 × 445,209.70
  4. Step 4: Simplify right side
    617,435.86x = 378,982,393,061.49
  5. Step 5: Solve for x
    x = 378,982,393,061.49/617,435.86
  6. Step 6: Final answer
    x = 613,800.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.