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Finding the Fourth Proportional to 2,338.58, 3,508.68 and 1,039.88

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Solution

The fourth proportional to 2,338.58, 3,508.68 and 1,039.88 is: 1,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,338.58 : 3,508.68 = 1,039.88 : x
  2. Step 2: Convert to fraction form
    2,338.58/3,508.68 = 1,039.88/x
  3. Step 3: Cross multiply
    2,338.58x = 3,508.68 × 1,039.88
  4. Step 4: Simplify right side
    2,338.58x = 3,648,606.16
  5. Step 5: Solve for x
    x = 3,648,606.16/2,338.58
  6. Step 6: Final answer
    x = 1,560.18

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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.