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Finding the Fourth Proportional to 2,699.38, 3,725.12 and 1,520.42

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Solution

The fourth proportional to 2,699.38, 3,725.12 and 1,520.42 is: 2,098.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.38 : 3,725.12 = 1,520.42 : x
  2. Step 2: Convert to fraction form
    2,699.38/3,725.12 = 1,520.42/x
  3. Step 3: Cross multiply
    2,699.38x = 3,725.12 × 1,520.42
  4. Step 4: Simplify right side
    2,699.38x = 5,663,746.95
  5. Step 5: Solve for x
    x = 5,663,746.95/2,699.38
  6. Step 6: Final answer
    x = 2,098.17

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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.