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Finding the Fourth Proportional to 2,040.75, 3,061.13 and 742.22

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Solution

The fourth proportional to 2,040.75, 3,061.13 and 742.22 is: 1,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,040.75 : 3,061.13 = 742.22 : x
  2. Step 2: Convert to fraction form
    2,040.75/3,061.13 = 742.22/x
  3. Step 3: Cross multiply
    2,040.75x = 3,061.13 × 742.22
  4. Step 4: Simplify right side
    2,040.75x = 2,272,031.91
  5. Step 5: Solve for x
    x = 2,272,031.91/2,040.75
  6. Step 6: Final answer
    x = 1,113.33

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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.