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Finding the Fourth Proportional to 2,426.63, 3,639.94 and 695.25

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Solution

The fourth proportional to 2,426.63, 3,639.94 and 695.25 is: 1,042.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,426.63 : 3,639.94 = 695.25 : x
  2. Step 2: Convert to fraction form
    2,426.63/3,639.94 = 695.25/x
  3. Step 3: Cross multiply
    2,426.63x = 3,639.94 × 695.25
  4. Step 4: Simplify right side
    2,426.63x = 2,530,666.55
  5. Step 5: Solve for x
    x = 2,530,666.55/2,426.63
  6. Step 6: Final answer
    x = 1,042.88

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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.