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Finding the Fourth Proportional to 2,696.64, 4,044.50 and 748.38

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Solution

The fourth proportional to 2,696.64, 4,044.50 and 748.38 is: 1,122.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,696.64 : 4,044.50 = 748.38 : x
  2. Step 2: Convert to fraction form
    2,696.64/4,044.50 = 748.38/x
  3. Step 3: Cross multiply
    2,696.64x = 4,044.50 × 748.38
  4. Step 4: Simplify right side
    2,696.64x = 3,026,822.91
  5. Step 5: Solve for x
    x = 3,026,822.91/2,696.64
  6. Step 6: Final answer
    x = 1,122.44

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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.