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Finding the Fourth Proportional to 8,669.61, 11,963.19 and 4,892.43

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Solution

The fourth proportional to 8,669.61, 11,963.19 and 4,892.43 is: 6,751.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.61 : 11,963.19 = 4,892.43 : x
  2. Step 2: Convert to fraction form
    8,669.61/11,963.19 = 4,892.43/x
  3. Step 3: Cross multiply
    8,669.61x = 11,963.19 × 4,892.43
  4. Step 4: Simplify right side
    8,669.61x = 58,529,069.65
  5. Step 5: Solve for x
    x = 58,529,069.65/8,669.61
  6. Step 6: Final answer
    x = 6,751.06

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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.