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Finding the Fourth Proportional to 7,531.84, 11,282.64 and 3,624.64

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Solution

The fourth proportional to 7,531.84, 11,282.64 and 3,624.64 is: 5,429.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,531.84 : 11,282.64 = 3,624.64 : x
  2. Step 2: Convert to fraction form
    7,531.84/11,282.64 = 3,624.64/x
  3. Step 3: Cross multiply
    7,531.84x = 11,282.64 × 3,624.64
  4. Step 4: Simplify right side
    7,531.84x = 40,895,508.25
  5. Step 5: Solve for x
    x = 40,895,508.25/7,531.84
  6. Step 6: Final answer
    x = 5,429.68

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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.