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Finding the Fourth Proportional to 5,529.60, 7,603.20 and 5,299.20

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Solution

The fourth proportional to 5,529.60, 7,603.20 and 5,299.20 is: 7,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,529.60 : 7,603.20 = 5,299.20 : x
  2. Step 2: Convert to fraction form
    5,529.60/7,603.20 = 5,299.20/x
  3. Step 3: Cross multiply
    5,529.60x = 7,603.20 × 5,299.20
  4. Step 4: Simplify right side
    5,529.60x = 40,290,877.44
  5. Step 5: Solve for x
    x = 40,290,877.44/5,529.60
  6. Step 6: Final answer
    x = 7,286.40

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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.