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Finding the Fourth Proportional to 2,356.49, 3,536.09 and 876.75

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Solution

The fourth proportional to 2,356.49, 3,536.09 and 876.75 is: 1,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.49 : 3,536.09 = 876.75 : x
  2. Step 2: Convert to fraction form
    2,356.49/3,536.09 = 876.75/x
  3. Step 3: Cross multiply
    2,356.49x = 3,536.09 × 876.75
  4. Step 4: Simplify right side
    2,356.49x = 3,100,266.91
  5. Step 5: Solve for x
    x = 3,100,266.91/2,356.49
  6. Step 6: Final answer
    x = 1,315.63

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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.