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Finding the Fourth Proportional to 10,614.66, 14,651.72 and 6,139.50

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Solution

The fourth proportional to 10,614.66, 14,651.72 and 6,139.50 is: 8,474.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,614.66 : 14,651.72 = 6,139.50 : x
  2. Step 2: Convert to fraction form
    10,614.66/14,651.72 = 6,139.50/x
  3. Step 3: Cross multiply
    10,614.66x = 14,651.72 × 6,139.50
  4. Step 4: Simplify right side
    10,614.66x = 89,954,204.24
  5. Step 5: Solve for x
    x = 89,954,204.24/10,614.66
  6. Step 6: Final answer
    x = 8,474.53

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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.