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Finding the Fourth Proportional to 7,491.48, 11,237.21 and 7,029.78

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Solution

The fourth proportional to 7,491.48, 11,237.21 and 7,029.78 is: 10,544.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,491.48 : 11,237.21 = 7,029.78 : x
  2. Step 2: Convert to fraction form
    7,491.48/11,237.21 = 7,029.78/x
  3. Step 3: Cross multiply
    7,491.48x = 11,237.21 × 7,029.78
  4. Step 4: Simplify right side
    7,491.48x = 78,995,114.11
  5. Step 5: Solve for x
    x = 78,995,114.11/7,491.48
  6. Step 6: Final answer
    x = 10,544.66

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1.5x scale

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.