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Finding the Fourth Proportional to 18,761, 28,151.22 and 9,527

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Solution

The fourth proportional to 18,761, 28,151.22 and 9,527 is: 14,295.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761 : 28,151.22 = 9,527 : x
  2. Step 2: Convert to fraction form
    18,761/28,151.22 = 9,527/x
  3. Step 3: Cross multiply
    18,761x = 28,151.22 × 9,527
  4. Step 4: Simplify right side
    18,761x = 268,196,672.94
  5. Step 5: Solve for x
    x = 268,196,672.94/18,761
  6. Step 6: Final answer
    x = 14,295.44

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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.