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Finding the Fourth Proportional to 8,632.76, 12,940.15 and 5,859.65

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Solution

The fourth proportional to 8,632.76, 12,940.15 and 5,859.65 is: 8,783.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.76 : 12,940.15 = 5,859.65 : x
  2. Step 2: Convert to fraction form
    8,632.76/12,940.15 = 5,859.65/x
  3. Step 3: Cross multiply
    8,632.76x = 12,940.15 × 5,859.65
  4. Step 4: Simplify right side
    8,632.76x = 75,824,749.95
  5. Step 5: Solve for x
    x = 75,824,749.95/8,632.76
  6. Step 6: Final answer
    x = 8,783.37

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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.