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Finding the Fourth Proportional to 1,347.89, 1,859.94 and 758.39

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Solution

The fourth proportional to 1,347.89, 1,859.94 and 758.39 is: 1,046.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.89 : 1,859.94 = 758.39 : x
  2. Step 2: Convert to fraction form
    1,347.89/1,859.94 = 758.39/x
  3. Step 3: Cross multiply
    1,347.89x = 1,859.94 × 758.39
  4. Step 4: Simplify right side
    1,347.89x = 1,410,550.60
  5. Step 5: Solve for x
    x = 1,410,550.60/1,347.89
  6. Step 6: Final answer
    x = 1,046.49

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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.