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Finding the Fourth Proportional to 617,105.58, 851,684.58 and 345,188.58

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Solution

The fourth proportional to 617,105.58, 851,684.58 and 345,188.58 is: 476,404.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,105.58 : 851,684.58 = 345,188.58 : x
  2. Step 2: Convert to fraction form
    617,105.58/851,684.58 = 345,188.58/x
  3. Step 3: Cross multiply
    617,105.58x = 851,684.58 × 345,188.58
  4. Step 4: Simplify right side
    617,105.58x = 293,991,790,778.10
  5. Step 5: Solve for x
    x = 293,991,790,778.10/617,105.58
  6. Step 6: Final answer
    x = 476,404.36

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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.