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Finding the Fourth Proportional to 1,335.87, 1,843.47 and 738.33

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Solution

The fourth proportional to 1,335.87, 1,843.47 and 738.33 is: 1,018.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.87 : 1,843.47 = 738.33 : x
  2. Step 2: Convert to fraction form
    1,335.87/1,843.47 = 738.33/x
  3. Step 3: Cross multiply
    1,335.87x = 1,843.47 × 738.33
  4. Step 4: Simplify right side
    1,335.87x = 1,361,089.21
  5. Step 5: Solve for x
    x = 1,361,089.21/1,335.87
  6. Step 6: Final answer
    x = 1,018.88

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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.