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Finding the Fourth Proportional to 8,927.91, 13,392.45 and 2,687.67

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Solution

The fourth proportional to 8,927.91, 13,392.45 and 2,687.67 is: 4,031.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,927.91 : 13,392.45 = 2,687.67 : x
  2. Step 2: Convert to fraction form
    8,927.91/13,392.45 = 2,687.67/x
  3. Step 3: Cross multiply
    8,927.91x = 13,392.45 × 2,687.67
  4. Step 4: Simplify right side
    8,927.91x = 35,994,486.09
  5. Step 5: Solve for x
    x = 35,994,486.09/8,927.91
  6. Step 6: Final answer
    x = 4,031.68

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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.