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Finding the Fourth Proportional to 8,392.50, 11,581.67 and 4,666.50

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Solution

The fourth proportional to 8,392.50, 11,581.67 and 4,666.50 is: 6,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.50 : 11,581.67 = 4,666.50 : x
  2. Step 2: Convert to fraction form
    8,392.50/11,581.67 = 4,666.50/x
  3. Step 3: Cross multiply
    8,392.50x = 11,581.67 × 4,666.50
  4. Step 4: Simplify right side
    8,392.50x = 54,045,863.06
  5. Step 5: Solve for x
    x = 54,045,863.06/8,392.50
  6. Step 6: Final answer
    x = 6,439.78

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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.