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Finding the Fourth Proportional to 2,237.82, 3,355.91 and 851.53

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Solution

The fourth proportional to 2,237.82, 3,355.91 and 851.53 is: 1,276.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,237.82 : 3,355.91 = 851.53 : x
  2. Step 2: Convert to fraction form
    2,237.82/3,355.91 = 851.53/x
  3. Step 3: Cross multiply
    2,237.82x = 3,355.91 × 851.53
  4. Step 4: Simplify right side
    2,237.82x = 2,857,637.01
  5. Step 5: Solve for x
    x = 2,857,637.01/2,237.82
  6. Step 6: Final answer
    x = 1,276.98

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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.