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Finding the Fourth Proportional to 3,042.93, 4,564.45 and 851.61

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Solution

The fourth proportional to 3,042.93, 4,564.45 and 851.61 is: 1,277.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,042.93 : 4,564.45 = 851.61 : x
  2. Step 2: Convert to fraction form
    3,042.93/4,564.45 = 851.61/x
  3. Step 3: Cross multiply
    3,042.93x = 4,564.45 × 851.61
  4. Step 4: Simplify right side
    3,042.93x = 3,887,149.45
  5. Step 5: Solve for x
    x = 3,887,149.45/3,042.93
  6. Step 6: Final answer
    x = 1,277.43

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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.