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Finding the Fourth Proportional to 5,408.40, 7,463.28 and 3,050.40

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Solution

The fourth proportional to 5,408.40, 7,463.28 and 3,050.40 is: 4,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.40 : 7,463.28 = 3,050.40 : x
  2. Step 2: Convert to fraction form
    5,408.40/7,463.28 = 3,050.40/x
  3. Step 3: Cross multiply
    5,408.40x = 7,463.28 × 3,050.40
  4. Step 4: Simplify right side
    5,408.40x = 22,765,989.31
  5. Step 5: Solve for x
    x = 22,765,989.31/5,408.40
  6. Step 6: Final answer
    x = 4,209.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.