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Finding the Fourth Proportional to 2,339.18, 3,508.33 and 878.02

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Solution

The fourth proportional to 2,339.18, 3,508.33 and 878.02 is: 1,316.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.18 : 3,508.33 = 878.02 : x
  2. Step 2: Convert to fraction form
    2,339.18/3,508.33 = 878.02/x
  3. Step 3: Cross multiply
    2,339.18x = 3,508.33 × 878.02
  4. Step 4: Simplify right side
    2,339.18x = 3,080,383.91
  5. Step 5: Solve for x
    x = 3,080,383.91/2,339.18
  6. Step 6: Final answer
    x = 1,316.86

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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.