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Finding the Fourth Proportional to 2,049.22, 3,074.76 and 750.40

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Solution

The fourth proportional to 2,049.22, 3,074.76 and 750.40 is: 1,125.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,049.22 : 3,074.76 = 750.40 : x
  2. Step 2: Convert to fraction form
    2,049.22/3,074.76 = 750.40/x
  3. Step 3: Cross multiply
    2,049.22x = 3,074.76 × 750.40
  4. Step 4: Simplify right side
    2,049.22x = 2,307,299.90
  5. Step 5: Solve for x
    x = 2,307,299.90/2,049.22
  6. Step 6: Final answer
    x = 1,125.94

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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.