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Finding the Fourth Proportional to 616,961.66, 851,450.47 and 345,054.85

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Solution

The fourth proportional to 616,961.66, 851,450.47 and 345,054.85 is: 476,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,961.66 : 851,450.47 = 345,054.85 : x
  2. Step 2: Convert to fraction form
    616,961.66/851,450.47 = 345,054.85/x
  3. Step 3: Cross multiply
    616,961.66x = 851,450.47 × 345,054.85
  4. Step 4: Simplify right side
    616,961.66x = 293,797,111,217.02
  5. Step 5: Solve for x
    x = 293,797,111,217.02/616,961.66
  6. Step 6: Final answer
    x = 476,199.95

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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.