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Finding the Fourth Proportional to 2,707.47, 4,060.74 and 759.22

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Solution

The fourth proportional to 2,707.47, 4,060.74 and 759.22 is: 1,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,707.47 : 4,060.74 = 759.22 : x
  2. Step 2: Convert to fraction form
    2,707.47/4,060.74 = 759.22/x
  3. Step 3: Cross multiply
    2,707.47x = 4,060.74 × 759.22
  4. Step 4: Simplify right side
    2,707.47x = 3,082,995.02
  5. Step 5: Solve for x
    x = 3,082,995.02/2,707.47
  6. Step 6: Final answer
    x = 1,138.70

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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.