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Finding the Fourth Proportional to 17,881.32, 26,821.53 and 8,527.95

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Solution

The fourth proportional to 17,881.32, 26,821.53 and 8,527.95 is: 12,791.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.32 : 26,821.53 = 8,527.95 : x
  2. Step 2: Convert to fraction form
    17,881.32/26,821.53 = 8,527.95/x
  3. Step 3: Cross multiply
    17,881.32x = 26,821.53 × 8,527.95
  4. Step 4: Simplify right side
    17,881.32x = 228,732,666.76
  5. Step 5: Solve for x
    x = 228,732,666.76/17,881.32
  6. Step 6: Final answer
    x = 12,791.71

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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.