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Finding the Fourth Proportional to 28,885.61, 43,325.13 and 7,824.44

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Solution

The fourth proportional to 28,885.61, 43,325.13 and 7,824.44 is: 11,735.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.61 : 43,325.13 = 7,824.44 : x
  2. Step 2: Convert to fraction form
    28,885.61/43,325.13 = 7,824.44/x
  3. Step 3: Cross multiply
    28,885.61x = 43,325.13 × 7,824.44
  4. Step 4: Simplify right side
    28,885.61x = 338,994,880.18
  5. Step 5: Solve for x
    x = 338,994,880.18/28,885.61
  6. Step 6: Final answer
    x = 11,735.77

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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.