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Finding the Fourth Proportional to 10,334.80, 15,469.80 and 7,418.80

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Solution

The fourth proportional to 10,334.80, 15,469.80 and 7,418.80 is: 11,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,334.80 : 15,469.80 = 7,418.80 : x
  2. Step 2: Convert to fraction form
    10,334.80/15,469.80 = 7,418.80/x
  3. Step 3: Cross multiply
    10,334.80x = 15,469.80 × 7,418.80
  4. Step 4: Simplify right side
    10,334.80x = 114,767,352.24
  5. Step 5: Solve for x
    x = 114,767,352.24/10,334.80
  6. Step 6: Final answer
    x = 11,104.94

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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.