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Finding the Fourth Proportional to 15,179.63, 20,950.62 and 8,892

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Solution

The fourth proportional to 15,179.63, 20,950.62 and 8,892 is: 12,272.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,179.63 : 20,950.62 = 8,892 : x
  2. Step 2: Convert to fraction form
    15,179.63/20,950.62 = 8,892/x
  3. Step 3: Cross multiply
    15,179.63x = 20,950.62 × 8,892
  4. Step 4: Simplify right side
    15,179.63x = 186,292,890.81
  5. Step 5: Solve for x
    x = 186,292,890.81/15,179.63
  6. Step 6: Final answer
    x = 12,272.56

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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.