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Finding the Fourth Proportional to 11,408.80, 17,113.20 and 5,562.40

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Solution

The fourth proportional to 11,408.80, 17,113.20 and 5,562.40 is: 8,343.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,408.80 : 17,113.20 = 5,562.40 : x
  2. Step 2: Convert to fraction form
    11,408.80/17,113.20 = 5,562.40/x
  3. Step 3: Cross multiply
    11,408.80x = 17,113.20 × 5,562.40
  4. Step 4: Simplify right side
    11,408.80x = 95,190,463.68
  5. Step 5: Solve for x
    x = 95,190,463.68/11,408.80
  6. Step 6: Final answer
    x = 8,343.60

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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.