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Finding the Fourth Proportional to 2,721.02, 4,081.80 and 746.68

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Solution

The fourth proportional to 2,721.02, 4,081.80 and 746.68 is: 1,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.02 : 4,081.80 = 746.68 : x
  2. Step 2: Convert to fraction form
    2,721.02/4,081.80 = 746.68/x
  3. Step 3: Cross multiply
    2,721.02x = 4,081.80 × 746.68
  4. Step 4: Simplify right side
    2,721.02x = 3,047,798.42
  5. Step 5: Solve for x
    x = 3,047,798.42/2,721.02
  6. Step 6: Final answer
    x = 1,120.09

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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.