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Finding the Fourth Proportional to 617,443.36, 851,255.04 and 445,217.20

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Solution

The fourth proportional to 617,443.36, 851,255.04 and 445,217.20 is: 613,810.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,443.36 : 851,255.04 = 445,217.20 : x
  2. Step 2: Convert to fraction form
    617,443.36/851,255.04 = 445,217.20/x
  3. Step 3: Cross multiply
    617,443.36x = 851,255.04 × 445,217.20
  4. Step 4: Simplify right side
    617,443.36x = 378,993,385,394.69
  5. Step 5: Solve for x
    x = 378,993,385,394.69/617,443.36
  6. Step 6: Final answer
    x = 613,810.77

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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.