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Finding the Fourth Proportional to 983.38, 1,357.06 and 590.41

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Solution

The fourth proportional to 983.38, 1,357.06 and 590.41 is: 814.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.38 : 1,357.06 = 590.41 : x
  2. Step 2: Convert to fraction form
    983.38/1,357.06 = 590.41/x
  3. Step 3: Cross multiply
    983.38x = 1,357.06 × 590.41
  4. Step 4: Simplify right side
    983.38x = 801,215.01
  5. Step 5: Solve for x
    x = 801,215.01/983.38
  6. Step 6: Final answer
    x = 814.76

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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.