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Finding the Fourth Proportional to 7,543.80, 11,311.20 and 4,624.20

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Solution

The fourth proportional to 7,543.80, 11,311.20 and 4,624.20 is: 6,933.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,543.80 : 11,311.20 = 4,624.20 : x
  2. Step 2: Convert to fraction form
    7,543.80/11,311.20 = 4,624.20/x
  3. Step 3: Cross multiply
    7,543.80x = 11,311.20 × 4,624.20
  4. Step 4: Simplify right side
    7,543.80x = 52,305,251.04
  5. Step 5: Solve for x
    x = 52,305,251.04/7,543.80
  6. Step 6: Final answer
    x = 6,933.54

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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.